What kind of habitat does a red backed salamander need to survive?

The answer is Damp forest floor

Red backed salamander or Plethodon cinereus is a species of small salamander that lives in the forest in North America. The salamander could have different color than red. Its color will be influenced by the number of neutrophile and lymphocyte which will be vary from red, yellow, orange, white or dark/lead.

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.