The clinic is preparing samples for three patients: a coughing cat suspected of feline lungworm, a dog with suspected bladder worms, and a dog undergoing heartworm evaluation. Which specimen-and-test plan best follows each parasite’s biology?

The clinic is planning parasite testing for three patients: an icteric cat that hunts lizards, a coughing dog that eats crayfish, and a dog with bloody diarrhea after swimming in freshwater. Which specimen-and-test plan best follows the biology of all three suspected flukes?

A dog develops painful subcutaneous nodules containing elongated larval cestodes after ingesting vertebrate prey. Repeated fecal examinations reveal no operculated ova. Which interpretation best reconciles the tissue finding and negative fecal results?

Imaging of an intermediate host reveals one dominant, thick-walled, expansile hepatic hydatid cyst containing internal membranes and daughter structures. Which parasite-stage pairing is most consistent with this pattern?

A farm dog that is routinely fed raw sheep offal has taeniid-type ova on fecal examination. Young children live in the home. Which instruction should the technician prioritize while confirmatory testing is pursued?

A dog from the southern United States has fever, marked muscle pain, a stiff gait, neutrophilia, muscle wasting, and periosteal proliferation. Repeated peripheral blood smears are unrewarding. Which transmission-and-sample plan best fits the leading diagnosis?

The veterinarian selects medication specifically to treat a protozoal infection. Which general parasiticide class best describes the intended target?

A cat with fever, dyspnea, and neurologic abnormalities has a positive Toxoplasma IgG result, but no oocysts are found on fecal flotation. Which interpretation is best?

An outdoor cat from an endemic area presents with acute fever, icterus, dyspnea, splenomegaly, and rapid deterioration. Cytauxzoon felis is suspected on the blood smear. Which plan should be prioritized?

A dog with freshwater exposure develops chronic bloody diarrhea, weight loss, and hypercalcemia. Routine fecal flotation is negative. Which next test should be prioritized for the suspected parasite?