When approaching a horse, never approach from?

You shouldn't approach a horse from behind them, because they can't see you.

Never approach a horse from behind because they can't see you and might kick you. 

Your dog can sniff at or even eat a bit of catnip. the herb is edible and not harmful. just don't expect them to roll around like a cat would! your dog may scrutinize catnip by licking and smelling at it, or be totally indifferent to this stimulant.