Maurice Shema

So like some serious, heavy single fathering goes on here.

List just in.

Not all chimp dads are mean dads.

And that's why it's called stickleback, I think.

So they're known as like underwater architects.

So they build nests on the bottom of a pond or stream also to get the moms to want to lay eggs.

And they use bits of plants that they glue together with a sticky substance that is called spiggan.

It's made out of protein-based mucus.

Okay.

And so they build these nests, and then they do these zigzag dances.

Like, they do dances when they see a female with a belly full of eggs to try to get her to lay the eggs in the nest.

And then she goes, and the dad will take care of them and sort of take them the rest of the way.

Can I jump in, Eduardo?

Yeah, go ahead.

There was this study by another colleague.

Like, there was one experiment that took dads and watched how their brain activates when they see and play with their baby.

And?

You would see activation in the really old parts of our brain.

And another scientist... Called Kumi Kuroda, and she was trying to isolate what part of the brain was responsible for nesting behavior.

And she had concluded that the first sort of parental instinct, the first nesting behavior, was male fish millions of years ago.