Dosalamanders go through complete or incomplete metamorphosis?

Answer 1

Incomplete. From the time of hatching until adulthood, the salamander remains active, and never goes through an inactive "pupal" stage where complete metamorphosis would occur. Of course, some salamanders never undergo metamorphosis at all. Many, such as the axolotl and the mud puppy, retain larva-like features and an aquatic lifestyle throughout their lives. Others, such as the plethodonts (red-backed salamanders and their relatives) hatch from eggs laid on land, and are more or less in their adult form (though not sexually mature) from the moment of hatching.

Answer 2

Many, but not all salamanders go through metamorphosis.

Answer 3

Milkweed Bugs, Grasshoppers, cockroaches, and dragonflies. These aren't all but it's about 10% of insects that go through incomplete metamorphosis.

Answer 4

they're tails grow