Rat's Nest Cave is named after the nests of Bushy-tailed Wood Rats found in the entrance. This species of super-cute rodents is native to the area and they use the cave as a home due to it's constantly warm temperatures and protection from predators. Rats are rarely seen, and if you see a rat, it's usually just the one.Bats are rarely seen at Rat's Nest Cave. The cave is not a hibernaculum (a place where bats hibernate through the winter). The occasional bat is seen in the summer as they are passing through the area.