It was mentioned in chat that we have a couple questions that deal specifically with problems of dogs chewing on things, and in that case adding a [chewing] tag might be nice, but [chewing] already exists, and is set as a synonym for [eating]. But that doesn't really fit the questions I think. Nothing is being eaten, just chewed on.
To me, chewing is an act/behavior that's not necessarily related to eating (e.g. we chew gum, but don't really eat it). I can see it also being used for questions on rodents, as it's necessary for them to chew on things to keep their teeth from growing too long.
Should the tags be dissociated?