Human form

Several Digimon have the ability to take on a human form. This is usually done to avoid suspicion while in the Human World, and generally hinders their combat abilities.

Possession of a human form is usually a character trait, rather than a species wide ability, although there are exceptions.

Digimon Xros Wars
After his death at the Xros Heart United Army's hands, reincarnated as the  through unspecified means.

briefly takes the form of a white cat before pulling into DigiQuartz.