Doom3r: You have a cat living in your apartment and interacting with everything you interact there (Who puts a food into the cat's bowls?, Who adjusts the box it's living in? Who empties the box that is in the toilet? Other thing that would come out if you really live in the same space with the cat), however for whatever reason you cannot pet (in a definition of a "to stroke in a gentle or loving manner") that cat, yet you still can do that to some random cat next to the Viks Clinic. I would love to know what is the lore reason for that other than somebody (whoever was adding "Feed teh Cat" quest line) just did not thought that if you have an animal in your house it is a bit more than just a decoration or a trophy.

zviz: Also, cat has no eyes if you look closely :) Just some template texture :)

Tracido: It's only in certain positions and locations, the eyes are there most often. If you come back many times and check on Nibbles, the little one moves about your apartment and in each animation, the cat's eyes most often work fine.

Doom3r: Yep, I've seen only once Nibbles has eyes being lit up as it is a part of Skynet army: only when you bring it in apartment. All other times it seems to have normal cat eyes.