Question

information on normal species.

Answer 1

Normal species mean that species which are very much in numbers on this earth. We can say that normal species are opposite to endangered species(species a few in numbers and these numbers also reducing). Endangered species are at the risk of extinction from this earth.
Normal species best examples can be pet animals in our homes. Pet animals are very large in numbers and this number is increasing day and night.

Answer 2

Normal species as the word "normal" suggests are species that are existing quite fine, population-wise in their current environment. They do not experience disturbance as of late that would alter their population count.