around 400 billion
There are 4260
5
37
532
I assume "non mammals" in your question means all animals that are not mammals. There are over one million species of animals in the world that are not mammals. We cannot give an exact number because we do not know how many undiscovered animals there are. Mammals make up less than one half of one percent of all animals. If you are asking, "How many individual animals are there on earth that are not mammals?" then no one can answer.
Yes! There are about 5,360 species of mammals in the world.
Mammals are in every country in the world.
No mammals are invertebrates. All mammals are vertebrates.
Nearly 1000 this makes up 1/4 of the mammals in the world
There has been many, they are one of the most dangerous mammals in the world
African Elephants are some of the biggest land mammals in the world.
No. There are many aquatic mammals.