BITER BACK is a term used to describe an animal that has the ability to bite and then retreat quickly. The crossword solutions for this term are MOLAR (5 letters), FLEA (4 letters), GNAT (4 letters), ASP (3 letters), MITE (4 letters), and CROC (4 letters). These animals all have the ability to bite and then quickly retreat, making them perfect examples of BITER BACK creatures. Molars are large teeth found in mammals, fleas are small insects that feed on the blood of mammals, gnats are small flying insects, asps are venomous snakes, mites are tiny arachnids, and crocodiles are large reptiles.