A group of 2 1/2-month-old feeder pigs are presented with non-pruritic keratinized skin lesions and mild lethargy. One severely affected animal is depressed and anorexic.

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A three-year-old male neutered Labrador retriever from the Ohio river valley basin is presented with chronic large bowel diarrhea and signs of respiratory disease (cough, fever). A lymph node smear shows round to ovoid (1-4 micrometers) encapsulated structures inside macrophages and giant cells. The organisms have thin cell walls, with thin clear zone between cell wall and cytoplasm.

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A 4-year old male Thoroughbred horse presents to you for colic. During your work up, you note a painful enlargement at the root of the mesentery on rectal palpation. You suspect that the cause of the horse's colic are adults from the egg shown in the picture below. Which of the following drugs effectively kills the adult organisms that can cause this condition?

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A seven-week-old pot-bellied pig is presented with a posterior swelling that looks like this: Click here to see image Which one of the following is the most likely clinical diagnosis?

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In canine patients with primary hyperparathyroidism, a chemistry panel would show:

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Which type of immune reaction is occurring in this picture of a horse with limb edema secondary to a localized vasculitis?

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An emaciated cow is presented. She appears weak and anorexic, with enlarged superficial cervical lymph nodes.

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