Whales are actually very close to birds. You see, birds and whales both have structures called homologous structures (H). H-structures are mainly bone structures in an animal that are very similar to other creatures. If you look at the bones and their structure in the whales fins and flippers you will see that they are nearly identical to that of a birds wing.
the blue whale and the the domestic
are salamanders or snails closely related to an octupus
The single-celled organism that is most closely related to the first cell to exist on Earth is likely a type of archaea. Archaea are ancient single-celled microorganisms that are considered to be one of the earliest life forms on our planet. They share many genetic and biochemical similarities with the first cells that appeared on Earth.
Birds are the closest living relatives to crocodiles. Both birds and crocodiles are members of the group Archosauria, which also includes dinosaurs. This shared ancestry can be seen in similarities in their skeletal structures and reproductive systems.
Organisms that are closely related to rabbits include; horses and turtles
Whales are related to the even-toed hoofed mammals. Whales are most closely related to modern hippos, and should share a common ancestor with them.
Reptiles
Yes, even though a tiger is of a the cat family, it is more closely related to a dog than that of a whale and a fish because a whale is a mammal but a fish is not.
Salamanders are related to newts.
The Amazon river dolphin has the nickname boto, although closely related, it's not a whale.
Animals
because of its abilities
A cat is the species most closely related to humans. Cats and human are both endothermic mammals. Although most whales are also mammals, cats and humans have the most traits in common.
the blue whale and the the domestic
Family and kingdom
Whales are mammalian, but very closely related to hoofed animals, especially the pig.
Convergent Evolution is the reason. :)