Question

Animals that have a completetube-like gut with two openings​

Answer 1

Answer:

All mammals, like dogs, cats, and humans; reptiles, amphibians, fish, birds, and even insects.

Explanation:

All mammals, like dogs, cats, and humans; reptiles, amphibians, fish, birds, and even insects are the animals that have a complete  tube-like gut with two openings​. A system having a tube with two openings i.e. mouth and an anus is called tubular system. In this tubular system, the animals eat with one opening and the other opening is used for excretion of waste and nitrogenous materials from the body so that's why most of the animals have two openings.