Question

What r normal species 

Answer 1

Your question's most easiest answer which not so complicated is "we" we human beings come in the normal species column, all the animals are also normal but. Humans who  are disabled or are weak from the brain are normal but mentally shaken there are many animals like this too.But first but not the least all the living creatures are normal evening having some problems. Hope this helps :) :) 

Answer 2

humans are the normal species