by looking at it's peanus
yes
Dolphins look like dolphins and why would they look like a fish when they are a mammal?
They're not. Dolphins are the only mammals on Earth besides humans that commit murder for no reason. Seriously, dolphins kill their fellow dolphins just for the f@#$ of it. Oh, and male dolphins like to rape other dolphins. Look this stuff up, I'm not joking.
Yes dolphins do look something like whales but whales are much bigger.
This answer can be highly variable, in many cases a pod can consist of mainly females and offspring with a few post-reproductive males in the pod. Their also are known to be bachelor pods of male dolphins, in other cases the pods are mixed relatively evenly with male and female dolphins
Like all mammals, dolphins require both a female and a male to reproduce. They do mate.
they are normally grey and are called bottlenose dolphins
What do you mean, "normal"? Dolphins look like dolphins, just their size and colouration is a little different between species.
they are both dolphins.
Google "dolphins" and it will show you what they look like.
by protecting the female dolphins...
water