The American Bulldog is usually broader looking than the Pit Bull. There are several types of dogs that are often lumped together as Bulldogs. In addition to the Pit Bull and American Bulldog, there is the American Stafforsdhire Terrier, the Bull Terrier, Bulldog, and Bull Mastiff. Pit Bull
Altricial means incapable of moving around on its own soon after hatching, and refers to a pattern of growth and development in organisms. The word is derived from the Latin root alere meaning to nourish and refers to the need for young to be fed and taken care of for a long duration.
Definition of utricle. : any of various small pouches or saccate parts of an animal or plant: such asa : the part of the membranous labyrinth of the inner ear into which the semicircular canals openb : a small usually indehiscent one-seeded fruit with thin membranous pericarp.