Moulting, also spelt molting, is when a bird or animal loses some of its feathers or fur so that it can grow new ones. Birds and animals usually moult on the change of season, so that they can grow a thick coat for the winter, or shed their winter coat when the weather warms up.
A mound is a raised part of the ground that is larger than a pile of dirt but smaller than a hill. Mounds can be naturally occurring, but most of the time mounds are made by people piling up some dirt. Burial mounds were used by some civilizations to mark the place of a grave.
Mounds can also be used to describe a large pile of something that isn't dirt. For example, you might have a mound of paperwork or a mound of laundry.
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Scientific name: mus musculus
Mousetraps are small devices designed to catch mice. There are many different designs of traps, but all rely on using some kind of bait and a trigger mechanism that causes something to move very quickly and either catch or kill the mouse.
Larger versions of mousetraps are available for catching rats.