The first type of heart is the simple two chambered heart, which is found in fish. The second is the third chamber heart, which is found in amphibians and reptiles. Mammals and birds have four chambered hearts.
Reptiles and amphibians are the vertebrates that have three-chamber hearts.
Snakes
Vertebrates
Some do and some don't. Only animals can have hearts, there are no plants/bacteria/etc with hearts. All vertebrates have a heart - examples include humans, fish and lizards.
Fish hearts have 2 main chambers: the atrium and the ventricle. Fish have the simplest hearts of all the vertebrates.
soft and slimy bony vertebrates
They're not vertebrates - they're invertebrates - because they have no internal skeleton.
Fish hearts have 2 main chambers: the atrium and the ventricle. Fish have the simplest hearts of all the vertebrates.
All mammals have four chambered hearts.
Three Hearts was created in 1979-02.
They have three hearts
All fish are vertebrates.