Specialist species are animals that are adapted to a particular thing, such as a specific food or habitat. An example of a specialist species is a tiger salamander, which requires a consistent wetland habitat to breed and eats only insects and worms.
Because of climate change, specialist species are at greater risk of extinction. This is because the particular requirements to maintain the species, or adaptations that the species has made to exist in its environment, can be detriments when that environment changes. Generalist species, such as raccoons, are better at adapting to changes in their environment and thus have a greater ability to continue their species.