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Dolphins are mammals.

en.wikipedia.org/wiki/Dolphin

Dolphins are a widely distributed and diverse group of aquatic mammals. They are an informal grouping within the order Cetacea, excluding whales and ...

oceanservice.noaa.gov/facts/dolphins.html

Even though they live in the ocean all of the time, dolphins are mammals, not fish. Like every mammal, dolphins are warm blooded. Unlike fish, who breathe ...

www.nmmf.org/fun-facts-for-students.html

All mammals have hair. We are mammals and dolphins are too. How do dolphins pass this mammal test? Some say dolphins have whiskers: can this be true?

mentalfloss.com/article/19116/if-dolphins-are-mammals-and-all-mammals-have-hair-why-arent-dolphins-hairy

Jul 21, 2008 ... When it comes to being mammal, dolphins fit the bill in all respects: they give birth to live young and nurse them, they're warm-blooded, they've ...

www.seaworld.org.za/uploads/files/DOLPHINS.pdf

Dolphins are mammals, not fish. What makes a dolphin a mammal? 1. They breathe air directly into their lungs. 2. They have hair at some point during their life ...

www.dolphins-world.com/how-do-you-know-dolphins-are-mammals

Oct 2, 2013 ... Dolphins are mammals because they breed their babies with milk produced by the mother.

.ask.com/youtube?q=Are+Dolphins+Mammals%3F&v=YFjSx4K_-Lw
Jun 1, 2009 ... Dolphins are mammals because they breathe air, they bear live young, and baby dolphins drink milk and have hair. Find out why dolphins are ...

www.dolphins-for-kids.com/why-are-dolphins-mammals-and-not-fish

Why are dolphins mammals and not fish? If you looked at a dolphin and didn't know any better, you'd think it was a fish. They are not. Dolphins cannot breathe in ...

io9.com/5921769/why-are-dolphins-smarter-than-most-other-mammals

Jun 27, 2012 ... Essentially, the scientists wanted to know how different the dolphins were, from a genetic perspective, as compared to other mammals.