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Small Mammals
JJC Vet Tech 216
111
Veterinary Medicine
Undergraduate 2
11/27/2014

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Term
Rodents belong to the Order ____.
Definition
Rodentia
Term
Describe the stomach and teeth of rodents:
Definition
-glandular and non-glandular stomach
-teeth divided into incisors and cheek teeth, separated by diastema
-hypsodontic incisors
-dental formula: I 1/1, C 0/0, P 0/0, M 3/3
-malocclusion is common problem
Term
Term for continually erupting/growing teeth?
Definition
hypsodontic
Term
What are the "cheek teeth" in a rodent?
Definition
molars - they have no premolars
Term
What separates a rodent's incisors from its cheek teeth?
Definition
diastema
Term
How to Tx overgrown rodent teeth?
Definition
-can trim with clippers, but may break/crack tooth
-dremel
Term
What is the hibernating gland in rodents?
Definition
-brown fat between shoulder blades
-warms blood
-thermoregulation, energy source
Term
What does "red tears" refer to?
Definition
The Hardarian gland in rodents secretes porphyrins to keep the eye and nictitating membrane moist; these can cause the appearance of red ocular discharge
Term
What can cause "red tears"?
Definition
-stress or illness
Term
Notes on rodent husbandry:
Definition
-solid flooring prevents foot trauma
-ammonia build-up contributes to resp. infections
-clean, dry, non-abrasive bedding
-environmental enrichment
-they're omnivores
-they perform coprophagy
Term
Do humans have a Harderian gland?
Definition
sort of - it's vestigial
Term
What animals have a Harderian gland?
Definition
snakes, and anything with a nictitating membrane
Term
How change the bedding in a rodent enclosure?
Definition
-full change= ^ stress significantly
-scoop out soiled substrate daily, and do full change less often (weekly?)
Term
Give some examples of bad substrates/bedding to use for a rodent cage, and why they are bad:
Definition
-cedar: liver problems
-aromatic shavings: respiratory infections
-rough material: abrasions
Term
Notes on supplying a water bottle to rodents:
Definition
-make sure they know how to use it before you leave them alone without any other water source
Term
What is coprophagy? What is its purpose?
Definition
-eat one's poop
-for nutrients
Term
What creature has the shortest gestation length of all lab animals? How short is it?
Definition
hamster: 15 days
Term
Hamsters belong to the Family ____.
Definition
Cricetidae
Term
Scientific names and alternate names for:
Syrian hamster
Dwarf hamster
Chinese hamster
Definition
Syrian / Golden: Mesocricetus auratus
Dwarf / Djungarian: Phodopus songorus
Chinese (no alt name): Cricetus griseus
Term
Which type of hamster is most commonly used for research?
Definition
Syrian / Golden / Mesocricetus auratus
Term
What is the most nocturnal of lab rodents?
Definition
hamsters
Term
Notes on hamster behavior and temperament:
Definition
-most nocturnal of lab rodents
-will bite if startled
-aggressive compared to other rodents
-females dominate males
-may hibernate if temp < 50F
-fastidious
-prefer to burrow
Term
How to properly scruff a hamster:
Definition
grab as much skin as possible and scruff til it's smiling and it's eyes bug out
Term
What sort of research is done on hamsters? Why?
Definition
-hypothermia and related physiological changes because they can hibernate if temp drops below 50F

-tumor research bc no lymph tissue in buccal cheek pouches, thus no immune response there

-general Dz stuff because they have rare spontaneous Dz, won't confound results
Term
Special physical features of hamsters:
Definition
-tailless
-buccal cheek pouches to store food, hide babies
-flank organ = sebaceous gland = musky scent
Term
What animal has a flank organ? What is it?
Definition
-hamsters
-sebaceous gland that produces a musky scent
-covered in bristly black hairs in male
-used for territorial marking
Term
What is special about a hamster's buccal cheek pouches?
Definition
-no lymph tissue in pouches
-thus no immune response to pathogens there
-thus used in tumor research
Term
How to sex a hamster?
Definition
-anogenital distance: male's holes are farther apart
-males have giant testicles when mature
males have more rounded posterior - anal sac
Term
Describe the estrous cycle of the hamster:
Definition
-continuous polyestrous
-cycles every 4 days
-white vaginal discharge after ovulation
Term
What is "hand breeding"?
Definition
-put male and female hamster near each other and monitor
-if okay after 5 min, can leave overnight to mate
Term
Other names for "wet tail"? What is it?
Definition
-proliferative ileitis
-transmissable ileal hyperplasia

-most common hamstet Dz
-high mortality
-bacterial infection w/Campylobacter (Gm- spirochete)
-CS: rough hair coat, diarrhea, rectal prolapse, lethargy
Term
What is Campylobacter?
Definition
Gm- spirochete responsible for "wet tail" in hamsters
Term
Why is "wet tail" often fatal?
Definition
-normal flora is mostly Gm+
-Abx to kill Gm- Campylobacter kill off normal flora, too
-hamster develops Clostridium dificil
-especially bad when this happens in babies
Term
What is LCM?
Definition
-Lymphocytic Choriomeningitis
-natural host = wild mouse
-1970s hamsters caused several hundred human cases
-zoonotic via bites, fecal/urine contact
-subclinical in hamsters, but in humans ranges from influenza symptoms to meningitis
Term
What is Tyzzers?
Definition
-disease caused by Gm- spore-forming Bacillus pisiformes
-all lab animals globally are susceptible
-causes rough hair coat, lethargy
Term
What is Amyloidosis?
Definition
-hamster Dz, possibly genetic
-most common geriatric cause of death
-over 18mo, ~85% positive
-protein plaques on organs, once in kidneys you see CS
-just supportive care
Term
Name the Dz's of hamsters:
Definition
-LCM (Lymphocytic Choriomeningitis)
-Tyzzer's
-Amyloidosis
Term
Name the Dz that all lab animals globally are susceptible to:
Definition
Tyzzer's: Bacillus pisiformes
-rough hair coat, lethargy
Term
Gerbils are in the Family ____.
Definition
Cricetidae
Term
Scientific name and alternate names for gerbils:
Definition
Meriones unguiculatus
-jird, sand rat, desert rat
-Mongolian most common
Term
Notes on the behavior and temperament of gerbils:
Definition
-monogamous
-male helps care for offspring
-clean, docile, curious
-odorless
-cyclic activity
-great jumpers and burrowers
-thump feet when nervous
Term
What sort of research is done on gerbils? Why?
Definition
-endocrine research because they are odorless
Term
What rodent is great at concentrating urine, and thus doesn't require a lot of water?
Definition
gerbil
Term
Name the Dz's of gerbils:
Definition
-spontaneous epileptic-like seizures
-Tyzzer's
-Staph
Term
Are gerbils prone to illness?
Definition
-no significant viruses
-resistant to most infectious diseases
Term
How to prevent seizures in gerbils?
Definition
-stress-related
-handle a lot when young to reduce stress later
Term
What rodent gets Staph infections? Describe this illness.
Definition
-gerbils, "nose abrasions"
-facial eczema / nasal dermatitis
-increased Harderian gland secretion complicated with Staph infection
-arises from cleanliness/husbandry problem
Term
Notes on handling/restraint of gerbils:
Definition
-try to avoid handling tail
-degloving = "tail slip"
Term
How to sex a gerbil:
Definition
-anogenital distance
-male has darkly pigment scrotum
Term
Hedgehogs are from where?
Definition
Africa
Term
Life span of a hedgehog?
Definition
10 years
Term
Notes on hedgehog lifespan and behavior:
Definition
-10 years
-nocturnal but can adapt
-solitary
-active and can swim
-insectivore/omnivore
-"anting" behavior
Term
What small mammal is quite active and thus requires a larger enclosure?
Definition
hedgehog
Term
What would you feed a hedgehog?
Definition
-cat food and insects
Term
What is "anting" behavior?
Definition
-hedgehogs lick at foreign objects
-rub frothy saliva onto back
-possibly to deter insects??
Term
Describe what environmental conditions a hedgehog would need in its enclosure:
Definition
-ambient temp 72-85 (POTZ)
-cermic heater or under-tank heater
-DRY
-no bright lights
Term
Name the medical conditions of hedgehogs:
Definition
-obesity
-hypothermia (torpor)
-pododermatitis
-mites and ringworm
-wobbly hedgehog syndrome
Term
Why is torpor bad for hedgehogs (and other hibernate-capable creatures)?
Definition
suppresses the immune system
Term
Possibly the most common reason to see a hedgehog at the vet?
Definition
-mites, treat with ivermectin and clean out whole enclosure
Term
CS of mites in a hedgehog?
Definition
dandruff
Term
What is Wobbly Hedgehog Syndrome?
Definition
-degenerative neurological Dz emerging in pet hedgehogs
-genetic? dietary?
Term
Where are prairie dogs found? When and why were they banned as pets in the US?
Definition
-North America
-banned 2003-2008 because of monkey pox; arose when African rodents were quarantined with prairie dogs that later went to pet stores
Term
What Dz's can prairie dogs transmit to people? What about non-zoonotic Dz's?
Definition
ZOONOTIC
-monkey pox (2003 ban)
-Yersinia pestis (bubonic plague)
-ringworm

NON-ZOONOTIC
-obesity, heart disease
Term
Notes on prairie dog life span, behavior, temperament, restraint, etc:
Definition
-5-10 years
-live in colonies, elaborate burrows
-diurnal
-bark like a dog
-no scruff- can do cat wrap
Term
What would one feed a pet prairie dog?
Definition
-rabbit pellets
-free-choice hay
Term
What is Yersinia pestis?
Definition
-found in wild
-Gm- bacteria carried by fleas
-causes bubonic plague
Term
Where do sugar gliders originate?
Definition
-N. Guinea, Australia
Term
Notes on sugar glider behavior, life span, temperament, vocalizations:
Definition
-nocturnal, arboreal
-10-12 years
-marsupials
-social colonies; if alone will super bond to human otherwise do poorly
-playful, intelligent
-bark at night, sound like squeaky toy
Term
Special physical features of sugar gliders:
Definition
-patagium: gliding membrane between limbs
-cloaca
-hair comb (rear digit 2/3 fused, opposable thumb
-scent glands
Term
Describe the scent glands of sugar gliders:
Definition
-gives chest an orange color
-males have one on their head which makes them go bald
Term
How far can a sugar glider glide?
Definition
up to 150ft
Term
Sugar gliders would make a good pet except for one major problem:
Definition
nutrition
Term
What do sugar gliders eat in the wild?
Definition
-sap, nectar, pollen, arachnids, etc
-extremely varied
Term
Common medical condition(s) of sugar gliders and the resulting symptoms:
Definition
-malnutrition which leads to MBD, secondary hyperparathyroidism
-severe depression
-hind limb paralysis
-death
Term
How to Tx MBD and related problems in sugar gliders?
Definition
-cage rest
-supplemental calcium, vit D (calcium loop)
-diet modification
Term
Notes on skunk behavior, temperament, life span:
Definition
-in captivity live up to 15ish
-nocturnal but adjust to diurnal
-diggers
-very playful, litter trainable
-some stay sweet after maturity, others don't; altering won't ensure good disposition
Term
What medical conditions can pet skunks get?
Definition
-hypocalcemia, secondary nutritional hyperparathyroidism
Term
What Dz's are skunks susceptible to?
Definition
-rabies
-distemper (K9 and Feline)
-Baylisascaris
Term
What zoonotic Dz's can skunks transmit to humans?
Definition
-rabies
-Baylisascaris
Term
What sort of diet might one feed a pet skunk?
Definition
-varied diet
-weekly mouse
-HB egg, yogurt, fruit, insects, etc
Term
What is the scientific name of the pet ferret? What does it mean? What are some other names for the ferret?
Definition
-Mustela putorius furo
-Mouse-Eating Smelly Thief
-polecat, foul martin
Term
Ferrets belong to the Order _____, and the Family _____.
Definition
Order Carnivora
Family Mustelidae
Term
Why are ferrets not legal to keep as pets in all states?
Definition
-potentially an invasive species
-could compete with indigenous N.A. black-footed ferret (Mustela nigriptes)
Term
What is the scientific name of the ferret indigenous to the US? What is its common name?
Definition
-Mustela nigriptes
-N.A. black-footed ferret
Term
What small mammal pet does not have any sweat glands?
Definition
ferret
Term
Aside from skunks, what small mammal pet is routinely descented? Does this remove all odor?
Definition
ferrets- anal glands Sx removed, but oil glands remain and create musky odor
Term
The N.A. black-footed ferret is the natural predator of...
Definition
prairie dog
Term
Color types of ferrets:
Definition
-sable (fitch) =
-albino
-cinnamon
-Shetland sable (more white on face)
Term
Notes on ferret behavior, temperament, life span:
Definition
-5-8 years (up to 12)
-sleep up to 75% day
-ferreting = can escape 1" hole
-"caching" behav = steal your stuff and hide it
-lots of funny noises
-don't bury poop, just back up into corner
-always eliminate upon waking
-"war dance" = alligator rolls
-sniff/sneeze is normal
Term
How to increase ferret welfare?
Definition
increase play, allow natural behaviors like caching
Term
Describe an ideal ferret cage:
Definition
-multi-level
-hide area
-litter box, esp triangular high-backed one
Term
What medical conditions and Dz's are ferrets susceptible to?
Definition
-FB ingestion
-insulinoma, adrenal tumors
-many are same as cats and dogs
-mange, fleas, ear mites, heartworm
-coccidia = most common intestinal parasite
-zoonotic influenza
-distemper, rabies
-Aleutian Dz Virus (ADV) = parvo
-Epizootic catarrhal enteritis (ECE) = "green slime Dz" = corona virus
Term
How to Tx/prevent HWT in ferrets?
Definition
cat heartworm products
Term
How to vaccinate a ferret against distemper and rabies?
Definition
dog vaccines (off-label)
Term
What does ADV stand for? What is it?
Definition
-Aleutian Dz Virus (ferrets)
-parvo
-worry about in zoos, biomed, breeding; test annually
Term
What is ECE? Alternate names? What is it?
Definition
Epizootic Catarrhal Enteritis
-"green slime" Dz
-corona virus
-occurs after intro to new enclosure
-100% morbidity, low mortality
-diarrhea, green mucus
Term
What vaccine tends to cause rxns in ferrets?
Definition
Virbac K9 rabies vaccine; may just give once in ferret's lifetime
Term
Terms for ferret sexes/ages? A group of ferrets?
Definition
M = Hob
F = Jill
F/S = Sprite
Juv = Kit
Group = Business
Term
Why must one be careful when fasting a ferret?
Definition
really fast transit time of 3-4 hours
Term
What sort of food should one feed a pet ferret:
Definition
-high quality proteins, they're true carnivores
-US: ferret diet, kitten food; Euro: prey
Term
How does diet affect ferret health and life span?
Definition
cancer not seen as much in Europe where they still feed live prey, tend to keep outside
Term
How might life span be affected in the ferret?
Definition
photoperiod? diet? genetics?
Term
#1 and #2 most common conditions in the ferret?
Definition
#1: Insulinoma
#2: Adrenal Tumor
Term
Notes on insulinoma in ferrets:
Definition
-hypoglycemia, depression, lethargy, seizures, death
-tend to be ~4yo
Tx: pred, Sx
Term
Notes on adrenal tumors in ferrets:
Definition
-benign or malignant
-more in females, ~4yo
-80% more common in L adrenal
-any sort of sexual signs, incl. male aggression
-hair loss, vulvar enlaregment in F/S, muscle wasting
-Tx: oral melatonin as preventative, Lupron implant, Deslorelin implant
Term
Normally, melatonin does what? What happens in a ferret with adrenal tumor?
Definition
-normally tells pituitary gland to not overproduce LH
-w/adrenal tumor, ferret lacks melatonin, so LH increases
Term
Which Tx for adrenal tumor in ferrets lasts 12 mo?
Definition
Lupron
Term
Which Tx for adrenal tumor in ferrets is very expensive?
Definition
Deslorelin
Term
Aside from #1 and #2, whate are some other Dz's ferrets are prone to?
Definition
-mast cell tumors
-lymphoma of multiple organs
-myofaciitis (emerging)
Term
What is myofaciitis?
Definition
-emerging Dz in ferrets
-muscle inflammation, fever, V/D
-young
-progressive & usu. fatal
-undulating fevers
-poss. genetic?
Term
Restraint/phlebotomy of ferrets:
Definition
-jugular
-anterior vena cava (seldom)
-lateral saphenous
-cephalic
-saph/ceph are tiny but can be cath'd
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