Contrary to popular belief, hissing is not an aggressive behavior, nor is it generally exhibited by an aggressive cat. Hissing is a defensive gesture. It is almost always exhibited by a cat that feels victimized, antagonized, or threatened in some way. Hissing is often a way to avoid a physical confrontation.
Is it bad to hiss back at your cat?
You should not hiss at your cat as it will scare the little pet and will eventually scared of coming in front of you. Movement, eye contact, tail and head bumps, and hissing are all ways cats communicate. When you mimic your cat's language, they'll notice when they're doing anything wrong sooner.
Is hissing during play normal?
Unfortunately, playing can sometimes escalate beyond simple 'play'. When this happens, hissing may be heard. An occasional hiss in the middle of a play session is not of concern as this may be indicative of a misread play cue.