—) The late-Cataceous led to many transitional forms between mammals and birds. One specious species was a recently discovered feline-avian creature called Archfelopteryx, a toothed form about the size of a cat bird, indeed with characteristics of both. Although it went extinct 65 million years ago, fossil evidence shows it built nests and was therefore protective of its kitty litters.
—) The late-Cataceous led to many transitional forms between mammals and birds. One specious species was a recently discovered feline-avian creature called Archfelopteryx, a toothed form about the size of a cat bird, indeed with characteristics of both. Although it went extinct 65 million years ago, fossil evidence shows it built nests and was therefore protective of its kitty litters.