10 free, exam-style North American Veterinary Licensing Examination (NAVLE) (NAVLE) practice questions with answers and explanations. No signup required. Work through them below, then take the full free NAVLE practice test to study every exam domain.
A 4-year-old male neutered Standard Poodle presents with a 3-week history of waxing-and-waning lethargy, intermittent vomiting, and weakness that worsens during stressful events. On presentation he is bradycardic and weak. Serum chemistry shows sodium 132 mEq/L and potassium 7.4 mEq/L. Which additional result would BEST support the suspected diagnosis?
Correct answer: B - A baseline cortisol that fails to rise after ACTH stimulation
A male cat presents obtunded with a large, firm, painful bladder and a heart rate of 100 bpm. Serum potassium is 8.6 mEq/L and the ECG shows absent P waves with a widened QRS. After establishing IV access, the clinician administers 10% calcium gluconate. What is the PRIMARY effect of this drug in this patient?
Correct answer: D - It protects the heart by restoring normal cell excitability
A 9-year-old gelding has a 4-hour history of acute, severe colic. He is sweating, repeatedly rolling, and unresponsive to a single dose of flunixin meglumine. Heart rate is 78 bpm, gut sounds are absent in all quadrants, and abdominocentesis yields serosanguineous fluid with an elevated lactate. What is the MOST appropriate recommendation?
Correct answer: A - Immediate referral for exploratory celiotomy
A high-producing dairy cow is found in sternal recumbency 18 hours after calving. She has cold ears, a dry muzzle, an S-shaped kink in her neck, and a heart rate of 92 bpm with decreased rumen motility. She is non-ambulatory but bright enough to swallow. Which treatment is MOST appropriate?
Correct answer: C - Slow IV calcium borogluconate while auscultating the heart
A breeder asks about parasite control for her Australian Shepherds, several of which are homozygous for the ABCB1 (MDR1) gene mutation. Which statement is correct?
Correct answer: D - Ivermectin at FDA-approved heartworm-prevention doses is generally safe in these dogs
A veterinarian examining a beef herd finds several cattle drooling heavily with vesicles and ulcers on the tongue, dental pad, and coronary bands; two animals are lame. The herd has not traveled, but new cattle were recently introduced. What is the MOST appropriate immediate action?
Correct answer: B - Immediately report the findings to state animal health authorities
A 13-year-old cat presents for weight loss despite a ravenous appetite, with intermittent vomiting and a palpable cervical nodule. Bloodwork shows a mildly elevated BUN and creatinine. The owner is concerned the cat has kidney disease. Regarding the relationship between the two conditions, which statement is MOST accurate?
Correct answer: C - Treating the hyperthyroidism may unmask underlying kidney disease
A horse owner wants to sell a horse across state lines. A screening ELISA for equine infectious anemia (EIA) returns positive. Which is the MOST appropriate next step and interpretation?
Correct answer: D - Confirm with an agar gel immunodiffusion (Coggins) test, then report a true positive
A 2-year-old dog ingested an anticoagulant rodenticide 5 days ago and now presents with lethargy, pallor, and dyspnea. Coagulation testing shows a markedly prolonged prothrombin time (PT). In addition to supportive care, which treatment addresses the underlying mechanism of toxicity?
Correct answer: A - Vitamin K1 (phytonadione)
A dog presents with pale mucous membranes and a packed cell volume of 19%. The reticulocyte count is markedly increased, and the blood smear shows polychromasia and spherocytes. How is this anemia BEST classified, and what does it suggest?
Correct answer: B - Regenerative anemia, suggesting hemolysis or blood loss
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