Assuming that each rabbit has two legs, there are 350-2 *118 =114 more legs.

As we know, rabbits actually have four legs, that is, each of us lacks two legs, so there are 1 14/2=57 rabbits.

Ducks. Should be the total number of rabbits: 1 18-57=6 1.

So there are 57 rabbits and 6 1 duck.