Which statements about fleas, lice, and mite-related conditions are true?

• A. Fleas jump
• B. Lice grasp
• C. Mange in dogs is caused by mites
• D. All of the above

Answer: (D)

Understanding how fleas, lice, and mites interact with their hosts helps distinguish what is true about each. Fleas are known for their jumping ability, which enables them to move quickly between hosts and environments. Lice are wingless parasites that cling to the host’s hair with their clawed legs, effectively grasping the hair shaft to stay attached. Mange in dogs is caused by mites, with species such as Sarcoptes scabiei and Demodex canis commonly involved in canine cases. Since each statement reflects a real trait or cause, all of the statements are true.