Because he wanted to tie the score!
or
Three, One to climb the ladder. One to shake it. And one to sue the ladder company.
or
Sure, Dick and Bob had a bunny!
or
None, but it takes at least one to sit and pray for the old one to go back on.
or
None, because they were copycats
or
When it came time to pay, the skunk didn't have a scent, the deer didn't have a buck so they put the meal on the duck's bill.
or