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Anonymous No. 16192548

Lets Talk about tits. What are the evolutionary steps toward mammals? Where are observable instances in nature?
>There needs to be nutrional Juice, but not blood itself
>There needs to be an Output Organ
>The Baby should have a drive to suck
>The Baby should find the right place to suck
How does this constellation even Happen randomly?
This is a bigger mystery to me than eyes.

Anonymous No. 16192569

>>16192548
They do not happen at once, but gradually.

Imagine:
1. Newborn is always hungry
2. Environment has scarce resources
3. Mothers that protect their young have more young thst survive to adulthood -> drive to stay near the young
4. Young want to play and nibble at everything
5. Proto-mammalians already have sweat glands
6. Sweat is better than nothing, so they drink it to get water
7. If an individual is born, that has even slightly more minerals/nutrients secreted in sweat -> faster growth for young
8. Some sweat glands specialize to secrete more fat, sugar and calcium

Milk glands are histologically very similar to sweat glands, just larger

Anonymous No. 16192610

>>16192548
That's a cat.

Anonymous No. 16192774

>>16192569
So whales were already Mammals before they went Back in the water? Underwater sweat be tricky.
And are there no current transitionary animals with Low Tier sweat-juice?

Anonymous No. 16192789

>>16192774
First synapsids appeared in triassic era, and first mammals in jurassic. They were small nocturnal cave-dwelling animals.

Platypuses have very watery milk and no nipples.

Whales evolved from hippopotamus-like animals in the cenozoic era, after large dinosaurs died out. Whales have very thick milk.

Anonymous No. 16193363

>>16192774
>Underwater sweat be tricky.
No, just pointless.

Anonymous No. 16193415

>>16192569
Ignore this. All evolutionary perspectives are completely fabricated and not backed by any evidence. No evidence, put it in the rubbish.