Originally Posted by BadgerBrigade
I have an indoor cat and she hangs out in my room with the door closed, Sometimes the window is also shut. I have three 6 gallon carboys in there all gassing off carbon dioxide. Is this enough CO2 to harm her? She's a very small kitty, About 6 pounds. But she is totally the love of my life and I don't want to do anything that could even closely endanger her. Please help me with this because it's really on my mind and it's really hard for her to be in any other room in the house because we sometimes leave the door open for the dog and we don't want her to get out
Your kitty will be fine, both my wife and I have veterinary backgrounds with cats as well as dogs.
Feeding the kitty some beer or cider is a different story.
I would see more harm possible if your cat could possibly knock a carboy down or whatever. Cats can be goody, and a bubbling airlock or blowoff tube could stir some curiosity.