Tiger salamanders eat worms, snails, insects, and slugs in the wild. Captive salamanders feed on smaller salamanders, frogs, newborn mice, and baby snakes.The larvae eat small crustaceans and insect larvae and once grown, they will feed on tadpoles and smaller salamander larvae and even small fish (Harding 1997).Tiger salamanders are eaten by badgers, snakes, bobcats, and owls.Larvae are eaten by aquatic insects, the larvae of other salamanders, and snakes.he larvae eat small crustaceans and insect larvae and once grown, they will feed on tadpoles and smaller salamander larvae and even small fish (Harding 1997). Tiger salamanders are eaten by badgers, snakes, bobcats, and owls. Larvae are eaten by aquatic insects, the larvae of other salamanders, and snakes.