I think it's bacteria
Microscopic animals such as amoeba and protozoa and the smallest animals in the world.
Animals cells
thyto plankton and a blue whale
insects are the smallest animals
its the SAND SNAKE
Answer:Krill, shrimp, mice, micro-organisms, I don't know any others. The 2 smallest mammals in the world are the 'Bumble-bee Bat' and 'Elephant Shrew'Edit:Nope. The smallest animal in the world is an Amoeba.
the pigmy shrew is the smallest mammal in north america. thats all i really know, but i hope it helps in some way :)
Shrew. This is one of the smallest animals in the world. Macaw.
The GIRAFFE is having the biggest heart in "land animals" in the World.
Strictly speaking one celled animals such as amoeba are the smallest animals on Earth.
Single celled animals.
seals, whales, crabs, starfish, coral (which is actually an animal along with sponges that are often mistaken as plants), gulls, puffins and many more.