although zebras look big size, why are they always attacked and killed by other animals?

Answer 1

I saw a video of a zebra killing a lion. They're tough.

Answer 2

it's because of they way that they dress. most of the carnivores of the African plains go for dull camouflage, but zebras have decided to make a bold fashion statement by going with stripes, though horizontal stripes tend to make the look plumper, they should have gone for vertical stripes, it takes pounds off you.

Answer 3

Coz their predators are even bigger.