Discover Animals pet ownership practices, with guides for dogs, cats, birds, aquatics, herps and small animals. The pet guides feature a full list of dog and cat breeds with additional information about breed-specific traits. Discover Animals features a wide range of articles about working animals, animal research, pets and animal training all written by animal experts such as highly experienced researchers, trainers, conservationists and scientists. Their articles are based on scientific studies and analysis which address sensitive animal topics such as invasive species, animal extinctions and animals in agriculture. Discover Animals Discover Animals is an online animal resource created by the National
Felidae Adult tigers actually display elongated rosettes that now appear as stripes. Adult lions seem to lack any distinctive markings altogether. Both juvenile tigers and lions, however, display partial rosettes. This ancestral character state appears only during these early stages, supporting the notion that ontogeny reflects phylogeny. The rosette patterns found on snow leopards, jaguars, and leopards all have a common origin. Fossil occurrences indicate that the Felidae arrived in North America about 10 million years later than the Canidae, and about 20 million years later than the Ursidae and the Nimravidae. Traditionally, five subfamilies have been distinguished within the Felidae