Is the jaguar a fastest animal?

No, these are the fastest animals on earth:

1.) Peregrine Falcon

2.) Sail Fish

3.) Cheetah

4.) Pronghorn Antelope

5.) Blue Wildebeest

6.) Lion

7.) Thomson's Gazelle

The jaguar is not the fastest animal because the cheetah is. The cheetah is a very fast animal because of it's long legs and long tale to keep it balanced.