Assistant Laboratory Animal Technician (ALAT) Practice Exam 2025 – Complete All-in-One Guide to Exam Success!

Question: 1 / 575

True or False: By 7 days of age, mouse pups are fully furred and their eyes are open.

True

False

Mouse pups are not fully furred and their eyes are not open by 7 days of age. Typically, mouse pups are born hairless and remain so for several days. Fur begins to develop around 8-10 days, and the eyes begin to open around 12-14 days. This means that at 7 days old, pups are still in the early stages of development, lacking the fur necessary for temperature regulation and having closed eyes, which prevents them from seeing their environment. Thus, the statement is false.

The other options suggest varying degrees of truth; however, none align with the established timeline of a mouse pup's development. Strain can influence maturation rates, but generally, the key milestones of fur development and eye opening occur later than 7 days.

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True, but not fully functional

Depends on the strain

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