Antilocapra americana

Yes, they have a backbone.

They are no carnivores. They are herbivores.

The adult Pronghorn Antelope's weight varies from the male to the female, the the female slightly lighter than the male. The male weighs from about 40 to 60 kg and the females weigh around 40 to 50 kg.

There used to be a predator similar to a cheetah that once hunted the pronghorn but it died out.

Yes they do, but they are only "spikes".

A male pronghorn is called a buck

A group of pronghorn is called a herd.

A female pronghorn is called a doe.

A young pronghorn is called a fawn.

Neither; they are herbivores.

Yes

Quite true, that.

The pronghorn is in a category all it's own (antilocapridae) and is neither a goat nor an antelope.

grass

ostrich in my oppinion because their stride are 10 - 16 feet

Yes it is.

Reebok

A cabrit is another name for the pronghorn antelope.