The yellow liquid that cats vomit is typically bile, a digestive fluid produced by the liver and stored in the gallbladder. When a cat vomits bile, it's usually due to one of the following: Empty ...
No all pica habits are serious. For cats that idly chew, it can be possible to stop them by using Olbas Oil (eucalyptus oil) or Bitter Apple (that’s used to deter animals from chewing stitches).