I recently bought a tool to cut my bunnys nail and have been cutting them every day getting him more and more comftorable at this point they were very long and im working on them I notice on one of his paws he has he has a black nail that curves and overlaps a bit of his other ones is this normal? Hes a black and white dwarf bunny and how do i know how much to clip his nails they were very long before and i just clip the tips bit by bit.