Bats, foxes, wild cats, and kinkajous.
No, mammals have a four-chambered heart.
All mammals have a four-chambered heart.
Except for Primates, most Mammals have four legs.
Four-legged mammals are not a species (or any kind of taxon), so they do not have a scientific name.
Oh, dude, not all mammals have four legs. Like, have you seen a kangaroo? They hop around on two legs and use their jacked-up tail for balance. And let's not forget about those sneaky dolphins, they're mammals too, but they're all about that aquatic life and don't bother with legs at all. So yeah, not all mammals are rocking the four-leg look.
Fish hearts have 2 main chambers: the atrium and the ventricle. Fish have the simplest hearts of all the vertebrates.
yes
Yes.
Yes. Dogs are mammals, and a 4 chambered heart is physical feature of mammals.
Most mammals have four legs, a few have only two.
All mammals have a four chambered heart.
Mammals and birds have four-chambered hearts.