You're probably right, given enough time zebras could probably be domesticated. But perhaps there are some animals that just cannot be domesticated at all? As

You're probably right, given enough time zebras could probably be domesticated. But perhaps there are some animals that just cannot be domesticated at all? As there seems to be some social/mental bond required, you'd be hard-pressed to find a scientist who'd claim domestication of insects was possible, the species-gap between us and them is just too big. So where is the line to be drawn?