Are all dolphins mammals and who found this out?

Anonymous

∙ 11y ago

Updated: 8/17/2019

Yes, all dolphins are mammals because they meet the five requirements of mammals:

All mammals have a backbone (vertebrates)
Dolphins have a backbone
All mammals have hair at one point in their life
Dolphins have a mustache when they are born
All mammals breathe air
Dolphins must surface periodically to breathe
All mammals produce milk to feed their young
A female dolphin's mammary glands are located on either side of the genital slit
All mammals are warm blooded
Dolphins generate their own heat

This is a general fact - no one ever really "found this out." But among the earliest investigations on the relationship between land mammals and sea mammals were those of Aristotle (384-322 BC) in ancient Greece.

Wiki User

∙ 11y ago

What else can I help you with?

Are pink river dolphins mammals?

Yes, all dolphins are mammals.

Are bottlenose dolphins mammals or reptiles?

MammalLike all dolphins, Bottle Nose Dolphins are mammals.

Are amazon pink river dolphins mammals?

Yes, all dolphins are mammals.

Are dolphines mammals or reptiles?

MammalLike all dolphins, Bottle Nose Dolphins are mammals.

Why do dolphins have bellybuttons?

Dolphins are placental mammals. All placental mammals have bellybuttons of some kind.

How are dolphins young are made?

Dolphins are mammals so they reproduce the same way all mammals do.

Are dolphins a mammal?

Yes, dolphins are mammals. Just like us. They do not have gills like fish, and have to come to the surface to breathe. They have live babies. They have fuzz on the top of their beak when they are babies, but it comes off as they grow.

Are all sea animals mammals?

No, all sea animals are not mammals. Fishes are not mammals, but dolphins are mammals.

Are dolphins found in Alaska?

No since dolphins are ocean dwelling mammals and Alaska is a landmass

Are dolphins and groupers vertebrates?

Yes dolphins are vertebrates, because they are mammals and all mammals have backbones.(We humans have backones).

Are pink dolphins warm blooded?

All species of dolphins are warm blooded, as they are aquatic mammals.

What sea mammals are found in the North American waters?

North American seal, dolphins, blue whale, humpback whale... many sea mammals that are found all around the world.

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