Brazilian gracile opossum habitats than more purely arboreal animals. It has also been found in artificial plantations. There are no recognised subspecies. Brazilian gracile opossums are arboreal and nocturnal, spending the day nesting in tree hollows. They are solitary animals, with each individual inhabiting a home range of anything from , depending on habitat. Males tend to have larger home ranges than females, presumably because, being larger, they require more food. The species is insectivorous, and is an opportunistic forager, not specialising in any particular kind of insect. Individuals have also been reported to eat some spiders, snails, and even fruit (including passionfruit).
Arboreal salamander Arboreal salamander The arboreal salamander ("Aneides lugubris") is a species of climbing salamander. An insectivore, it is native to California and Baja California, where it is primarily associated with oak and sycamore woodlands, and thick chaparral. "Aneides lugubris" is SVL (snout-vent length), with plain purplish-brown coloring, usually spotted dorsally with gold or yellow, although it may also be unspotted. The tail is prehensile. The juvenile is dark overall, clouded with greyish color and fine yellow speckling on the back. It has rusty markings on the snout, tail, and on sides above the forelimbs. The male of this species can be