Answer:
The greatest differences between a zebra and a horse are their size, speed, and coloration. Zebras are smaller and lighter than horses, but they can exceed them in length. Zebras are also slower than horses in the majority of cases, but they are fast animals in their own respect.
Step-by-step explanation:
For example, a horse and zebra can breed to produce a zorse, however zorse are fundamentally infertile (due to the different number of chromosomes between a horse and a zebra) and thus a horse is a different species to a zebra.