The term 'Bitty Biter' is a collective term for small biting insects, such as fleas, gnats, nips, ittys, yips, and skeeters. Fleas are small, wingless insects that feed on the blood of mammals and birds. Gnats are small, flying insects that can be found in both aquatic and terrestrial habitats. Nips are small, biting flies that are related to mosquitoes. Ittys are small, biting flies that are related to midges. Yips are small, biting flies that are related to black flies. Skeeters are small, flying insects that are related to mosquitoes. All of these insects are capable of biting humans and animals, and can cause irritation and discomfort.