Answers
1. D - Bluetongue Several 12-month-old sheep and goats are sick at a petting zoo that has cows,
horses, pigs, bison, and white-tailed deer. One of the deer is also affected. The
rest of the animals appear well.
Affected sheep are febrile, listless and off-feed, with serous or mucopurulent
nasal discharge and rectal temperatures ranging from 105-107.5°F (40.5-42°C)
[N=100.9-103.8°F (38.3-39.9°C)].
Physical exam shows swollen muzzles with edema and congestion of the lips, nose,
and face with small hemorrhages and ulcers on the mucous membranes. The
ulcers appear where the teeth contact the swollen lips and tongue.
Two affected animals are lame.
What is the diagnosis?
A - Peste des petits ruminants (PPR)
B - Ovine progressive pneumonia (OPP)
C - Caprine arthritis encephalitis (CAE)
D - Bluetongue
E - Contagious ecthyma
2. Cnemidocoptes The budgerigar is presented with severe beak deformity due to white, porous
pilae proliferative encrustations. Similar lesions are noted around the vent. What si the
most likely diagnosis?
A. Cnemidocoptes pilae
B. Dermanyssus gallinae
C. Squamous cell carcinoma
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Answers
D. Fibrosarcoma
E. Xanthoma
3. D - Thoracocen- A 13-week-old puppy is presented for trauma after being attacked by another
tesis and chest dog.
tube After stabilization, a series of radiographs show various issues (see below).
acute pneumoth- Which one of the following choices is the best next step to do for this patient?
orax
A - Place an intravenous catheter and start IV fluids
B - Aspirate subcutaneous emphysema and apply snug body wrap
C - Computerized tomography
D - Thoracocentesis and chest tube
E - Suture lacerations and insert drains
4. D - Chorioptic A 12-year-old Belgian draft horse gelding is presented with severe hyperkeratosis
mange and scaling on the caudal aspects of all four pasterns. The parasite shown below
* most common is found on a skin scraping of one of the lesions.
mite in equine Which one of the following choices is the correct diagnosis?
"Chorioptic equi"
, often seen A - Sarcoptic dermatitis
in draft horses B - Demodecosis
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with heavy feath- C - Cheyletiellosis
ering and usual- D - Chorioptic mange
ly on lower limbs E - Trombiculiasis
pastern area
5. B - Quarantine A couple of days ago a client brought an 18-month-old filly home from a "kill pen"
the horse; take (was headed for Mexico for slaughter). She just sent you photos of the horse
temps on all oth- showing thick bilateral mucopurulent nasal discharge and a swollen throat latch.
er horses She says that the horse?s breathing is stertorous and loud.
*STRANGLES* You are on your way to see the horse, thinking you will need to do an emergency
tracheotomy first thing.
What are additional preliminary recommendations based on the top differential?
A - Will need to biopsy the mass if owner wants to proceed with chemotherapy
B - Quarantine the horse; take temps on all other horses
C - Pass a nasogastric tube to treat esophageal obstruction
D - Refer for laser ablation treatment for guttural pouch tympany
E - Start antimicrobials; limit iodine intake and measure thyroid levels for goiter
6. C - Pannus A five-year-old female spayed German shepherd dog is presented with a bilateral
* bilateral chronic eye problem which has been worsening over the past month, see the image
superficial kerati- below.