Mammals

Mammals are warm blooded vertebrates with fur or hair on their bodies. Most young are born alive, and they all feed milk to their babies. There are about 5,000 species, some being the Giant Panda (Ailuropoda melanoleuca) and the dolphin (Delphinus delphis)

Sponges

Sponges are invertebrates with no muscle, tissue, circulatory, or nervous system. They are filter feeders and reproduce sexually and asexually. Sexually by releasing sperm until it reaches another sponge, and asexually by budding. There are between 2000 and 9000 valid species; some are the glass sponge (Hexactinellida) and the vase sponge (Callyspongia vaginalis).