I'm a creature of the night, known for being awake when others sleep. If you prefer late hours, some might call you by my name. What am I?

Which animal can always be counted on to have its homework finished? Solve the riddle → I'm a huge, grey animal, famous for the single horn that sits right upon my nose. What am I? Solve the riddle → What spiky animal is always perky and full of life? Solve the riddle → Which rodent is known for always carrying its little ones in a built-in pocket? Solve the riddle → What marine mammal is a natural at making deals and closing sales? Solve the riddle →