Cetacea and two (external) limbs that are modified into flippers. Though not as flexible or agile as seals, cetaceans can swim very quickly, with the killer whale able to travel at in short bursts and the fin whale able to cruise at . Dolphins are able to make very tight turns while swimming at high speeds. The hindlimbs of cetaceans are internal, and are thought to be vestigial. Baleen whales have short hairs on their mouth, unlike the toothed whales. Cetaceans have well-developed senses—their eyesight and hearing are adapted for both air and water, and baleen whales have a tactile system
Small-toothed palm civet palm civets, this species is solitary, arboreal and nocturnal. Its gestation period is 45 days, and the average litter size is 3, which are born in dens made in the trees. Young open their eyes at 11 days and are weaned at two months. It can have two litters a year and there is no set mating season. It can live for 11 years. It is threatened primarily by deforestation, as are many Southeast Asian forest animals. Small-toothed palm civet The small-toothed palm civet ("Arctogalidia trivirgata"), also known as the three-striped palm civet, is a palm civet. It lives in