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Avian and Exotics > Rats, Mice and Hamsters > Flashcards

Rats, Mice and Hamsters Flashcards

1
Q

What condition in hamsters is commonly referred to as “wet tail”?

A. Proliferative ileitis
B. Lymphocytic choriomeningitis
C. Cushing’s disease
D. Cardiomyopathy

A

A. Proliferative ileitis (Lawsonia)

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2
Q

Which of the following statements is true about Syrian hamsters?

A. They can be housed in groups.
B. They should be housed solo.
C. They have constantly growing molars.
D. They can be treated with penicillin.

A

B. They should be housed solo

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3
Q

Which zoonotic disease can humans contract from rats, and is treated with penicillin in people?

A. Giardia
B. Streptococcus pneumoniae
C. Streptobacillus moniliformis
D. Hymenolepis

A

C. Streptobacillus moniliformis (Rat Bite Fever)

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4
Q

Which of the following is NOT a recommended treatment for respiratory infections in rats?

A. Enrofloxacin
B. Doxycycline
C. Azithromycin
D. Penicillin

A

D. Penicillin

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5
Q

What type of mammary gland tumor is commonly found in rats?

A

Benign mammary fibroadenoma

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6
Q

What type of mammary gland tumor is commonly found in mice?

A

Malignant mammary adenocarcinomas

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7
Q

Which respiratory pathogen is the #1 cause of pneumonia in both mice and rats?
A. Sendai virus
B. Mycoplasma pulmonis
C. Streptococcus pneumoniae
D. Corynebacterium kutcheri

A

B. Mycoplasma pulmonis

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8
Q

What medication is used to treat rats with pituitary tumors?

A. Cabergoline
B. Enrofloxacin
C. Ivermectin
D. Azithromycin

A

A. Cabergoline

( + Prednisone)

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9
Q

Which of the following species gets malignant mammary gland adenocarcinomas?

A. Rats
B. Mice
C. Hamsters
D. Guinea pigs

A

B. Mice

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10
Q

Which pathogen is NOT typically associated with skin infections in rats?

A. Staphylococcus aureus
B. Mycoplasma pulmonis
C. Mites
D. Fur lice

A

B. Mycoplasma pulmonis (main resp pathogen)

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11
Q

What is a significant clinical difference between the types of mammary tumors found in rats and mice?

A. Mice commonly get benign fibroadenomas, while rats develop malignant adenocarcinomas.
B. Rats commonly develop benign fibroadenomas, whereas mice often develop malignant adenocarcinomas.
C. Both rats and mice are prone to benign fibroadenomas.
D. Both species primarily develop malignant mammary adenocarcinomas.

A

B. Rats commonly develop benign fibroadenomas, whereas mice often develop malignant adenocarcinomas.

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12
Q

A 2-year-old female rat presents with ataxia and hind limb weakness. What is the likely diagnosis, and what treatment would you initiate?

A. Pituitary tumor; treat with prednisone and cabergoline.
B. Mammary fibroadenoma; treat with enrofloxacin.
C. Proliferative ileitis; treat with metronidazole.
D. Mycoplasma pneumonia; treat with doxycycline and azithromycin.

A

A. Pituitary tumor; treat with prednisone and cabergoline.

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13
Q

Which characteristic about rats and mice is true?

A. Mice lack a gallbladder, while rats possess one.
B. Rats have a divided glandular and non-glandular stomach, whereas mice do not.
C. Both mice and rats have continuously growing molars.
D. Mice have porphyrin tear staining due to the Harderian gland, but rats do not.

A

B. Rats have a divided glandular and non-glandular stomach, whereas mice do not.

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14
Q

What are the recommended medications for treating Mycoplasma pulmonis pneumonia in rats, and which medication would you avoid?

A. Enrofloxacin, doxycycline, avoid penicillin.
B. Azithromycin, prednisone, avoid metronidazole.
C. Cabergoline, prednisone, avoid azithromycin.
D. Ivermectin, metronidazole, avoid doxycycline.

A

A. Enrofloxacin, doxycycline, avoid penicillin.

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15
Q

A hamster presents with severe diarrhea, rectal prolapse, and a history of recent stress. What is the most likely diagnosis, and which pathogen is the primary concern?

A. Wet tail; Lawsonia intracellularis.
B. Cushing’s disease; Campylobacter spp.
C. Lymphocytic choriomeningitis; Hymenolepis spp.
D. Cardiomyopathy; Mycoplasma pulmonis.

A

A. Wet tail; Lawsonia intracellularis.

(Proliferative ileitis)
(High morbidity, unfixable)

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16
Q

Which of the following statements best describes why OVH (ovariohysterectomy) is recommended in female rats before 1 year of age?

A. It reduces the risk of malignant mammary tumors and respiratory infections.
B. It is primarily done to prevent pyometra and obesity
C. It eliminates the risk of uterine cancer and cardiovascular disease.
D. It prevents the development of benign mammary tumors and pituitary tumors linked to estrogen.

A

D. It prevents the development of benign mammary tumors and pituitary tumors linked to estrogen.

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17
Q

A rat shows signs of red porphyrin staining around the eyes and salivary gland swelling. What is the most likely diagnosis, and which pathogen is involved?

A. Mycoplasma pulmonis
B. SDA virus (Coronavirus); Sialodacryoadenitis virus
C. Sendai virus
D. Staphylococcus aureus

A

B. SDA virus (Coronavirus); Sialodacryoadenitis virus

18
Q

Which respiratory infection in rats can present similarly to Mycoplasma pulmonis pneumonia and cause caseous nodules?

A. Streptococcus pneumoniae
B. Corynebacterium kutcheri
C. CAR bacillus
D. Sialodacryoadenitis virus

A

B. Corynebacterium kutcheri

19
Q

Which of the following species is incapable of vomiting?

A. Mice
B. Ferrets
C. Rats
D. Hamsters

A

C. Rats

20
Q

When is porphyrin staining around the eyes and nose in rats most commonly seen, and what is the underlying cause?

A. During respiratory infection; Harderian gland secretion.
B. In cases of malnutrition; vitamin A deficiency.
C. In severe dental disease; salivary gland overproduction.
D. During recovery from surgery; anesthesia effects.

A

A. During respiratory infection; Harderian gland secretion.

21
Q

A female hamster presents with a single lump on its flank. What is the most likely diagnosis?
A. Mammary tumor
B. Impacted scent gland
C. Lymphocytic choriomeningitis
D. Demodex

A

B. Impacted scent gland

22
Q

Which condition in hamsters can cause intussusception and rectal prolapse?

A. Wet tail (proliferative ileitis)
B. Cushing’s disease
C. Lymphocytic choriomeningitis
D. Hepatic cystadenomas

A

A. Wet tail (proliferative ileitis/Lawsonia)

23
Q

A 6-month-old female rat is undergoing an OVH to prevent future mammary tumors. What other significant health issue does this procedure help prevent?

A. Pyometra
B. Pituitary tumors
C. Kidney disease
D. Uterine cancer

A

B. Pituitary tumors

24
Q

What pathogen is known to cause abscesses and caseous pneumonia in rats, and how is it commonly treated?

A. Corynebacterium kutcheri; treated with enrofloxacin
B. CAR bacillus; treated with azithromycin
C. Sendai virus; treated with doxycycline
D. Streptococcus pneumoniae; treated with prednisone

A

A. Corynebacterium kutcheri; treated with enrofloxacin

25
Q

Which species is most likely to cannibalize their young if housed under stress or poor conditions?

A. Rats
B. Mice
C. Hamsters
D. All of the above

A

C. Hamsters

26
Q

In which species can males generally be housed together without significant fighting or aggression?

A. Rats
B. Mice
C. Hamsters
D. None of the above

A

A. Rats

27
Q

How does the intensity of the odor in male rats compare to that of female rats?

A) Male rats generally have a stronger and more persistent odor.
B) Female rats have a stronger odor.
C) There is no noticeable difference in odor intensity between male and female rats.
D) Odor intensity in rats is influenced only by environmental factors, not gender.

A

A) Male rats generally have a stronger and more persistent odor.

28
Q

What pathogen is associated with pododermatitis in rats?

A

Staph aureus

29
Q

What are causes of ring tail in rats?

A
  • Low humidity
  • Overly absorbant bedding
30
Q

What is the causative agent associated with Rat Bite Fever?

A

Strep moniliformis

31
Q

Which of the following small mammals has cheek pouches?

A. Gerbils
B. Mice
C. Rats
D. Hamsters

A

D. Hamsters

32
Q

Which of the following small mammals has water reserving kidneys?

A. Gerbils
B. Mice
C. Rats
D. Hamsters

A

D. Hamsters

33
Q

Which of the following small mammals has a scent gland normally located on the side of the flank?

A. Gerbils
B. Mice
C. Rats
D. Hamsters

A

D. Hamsters

34
Q

What pathogen is known as the zoonotic dwarf tapeworm seen in hamsters?

A

Hymenolepis nana

35
Q

Which of the following is NOT safe to use in hamsters?

A. Metronidazole
B. Enrofloxacin
C. Amoxicillin
D. TMS

A

C. Amoxicillin

36
Q

Eye trauma resulting in enucleation is commonly seen in which of the following?

A. Hamsters
B. Mice
C. Rats
D. Gerbils

A

A. Hamsters

37
Q

Cushings disease resulting in fur loss can be seen in which of the following?

A. Hamsters
B. Mice
C. Rats
D. Gerbils

A

A. Hamsters

38
Q

List the most common ectoparasites seen in hamsters

A
  1. Demodex
  2. Cheyletiella (fur mites)
39
Q

Which of the following small mammals is predisposed to hereditary cardiomyopathy?

A. Hamsters
B. Mice
C. Rats
D. Gerbils

A

A. Hamsters

40
Q

A hamster presents with an enlarged abdomen and purple discoloration of the surrounding area. What is the likely diagnosis?

A

Liver biliary cystadenomas

Ddx: Hereditary cardiomyopathy

Avian and Exotics (3 decks)

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