Animal that moos

COW

This farmyard mammal is known for producing milk and often grazes in pastures with a distinctive black-and-white or brown coat.

The clue "Animal that moos" is a straightforward definition pointing to a common farm animal known for its distinctive "moo" sound. The answer is "COW," which fits perfectly since cows are widely recognized for this vocalization. There’s no hidden wordplay or trick here—just a simple, direct connection between the sound and the animal. If you’ve ever heard a cow, the answer is likely the first thing that comes to mind.