Simplify the following text for a Grade 3 native English-speaking person.
Original: The feet are neither so long as the foot of the hare , nor so round as that of the cat ; well split-up toes , and the nails black .
Simplified: Their feet are not as large as a hare 's foot , but they are not as round as that of a cat , either . They have toes that are split up perfectly , and their nails are all black .