ABSTRACT
Tarsiers are nocturnal, but this may be a secondary adaptation. Tarsiiformes can be placed at the level of infraorder, suborder, or series. The living representatives can all be placed in the single superfamily Tarsioidea, containing the lone family Tarsiidae. Tarsiers are the only primates that are completely faunivorous. Feeding on vegetation has never been reported. Researchers have seen tarsiers biting on fungi and leaves, but without chewing. The descriptions of primate behavior are arranged under four headings: ecology, sociality, life cycle, and cognition. Tarsiers sometimes groom themselves with their teeth and specialized claws in the manner of strepsirrhines. Pair bonding in the sense is characteristic of spectral tarsiers. That is, the partners are strongly interact with affiliative behaviors. Gestation sharply distinguishes tarsiers from strepsirrhines. It lasts for about six months, which is very long for such tiny animals. The precocious infant develops rapidly. Mothers follow a pattern of "cache and carry", because infants are too big to be carried continuously.
