Toothed whale whales do not have wax ester deposits nor branched fatty chain acids in their blubber. Thus, more recent evolution of these complex blubber traits occurred after baleen whales and toothed whales split, and only in the toothed whale lineage. Toothed whales have torpedo-shaped bodies with inflexible necks, limbs modified into flippers, nonexistent external ear flaps, a large tail fin, and bulbous heads (with the exception of sperm whales). Their skulls have small eye orbits, long beaks (with the exception sperm whales), and eyes placed on the sides of their heads. Toothed whales range in size from the and vaquita to
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