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.
altruism. noun. 1  Unselfish concern for the welfare of others; selflessness. 2  Zoology Instinctive behavior that is detrimental to the individual but favors the survival or spread of that individual's genes, as by benefiting its relatives.