The grasshopper goes through three stages in its life cycle; egg, nymph, adult (or 4; egg, larvae, pupa, adult) and so they are like frogs. The frog lifecycle can be simplified as egg, tadpole, frog, 3 very similar stages to the grasshopper.
Dogs are born as dogs, they do not have an egg or nymph stage!
Snakes are hatch from eggs directly as snakes, so do not have a nymph stage.