Simplify the following text for a Grade 7 native English-speaking person.
Original: They are used by some meat eating mammals such as cats and dogs to catch and hold prey , but they may also be used for other things such as digging , climbing trees , and so on , in those and other species .
Simplified: Claws are used to catch and hold prey in carnivorous mammals such as cats and dogs , but may also be used for such purposes as digging , climbing trees , etc. , in those and other species .