Almost all chicken stock I have ever made and found in stores in boiled with onions, which are toxic for cats. (savvyhomemade.com)
There's also the possibility of onions and garlic being tucked into the can in some form which are toxic in small doses. (smartdogowners.com)
That sort of thinking is toxic in relationships, especially since the «problem» often lies in our own perception rather than in another's behavior. (nakedpastor.com)