<P> The home ranges used by wild brown - throated three - toed sloths in Costa Rica include cacao, pasture, riparian forests, and living fence - rows . For the first few months after giving birth, mothers remain at just one or two trees, and guide their young . At about five to seven months of age, when the young have become more independent, mothers expand their resources and leave their young in new areas . The home range for mothers are larger than those of young . After separation, only the mothers use the cacao agro forest, but both use riparian forest . Different types of trees are used by both mother and young, which indicates that this agricultural matrix provides an important habitat type for these animals . </P> <P> Three - toed sloths have no incisor or canine teeth, just a set of peg - shaped cheek teeth that are not clearly divided into premolars and molars, and lack homology with those teeth in other mammals, thus are referred to as molariforms . The molariform dentition in three - toed sloths is simple and can be characterized as dental formula of: 54 - 5 . </P> <P> Three - toed sloths are unusual amongst the mammals in possessing as many as nine cervical vertebrae, which may be due to mutations in the homeotic genes . All other mammals have seven cervical vertebrae, other than the two - toed sloth and the manatee, which have only six . </P>

How fast can a three toed sloth move