I've been noticing some pet glitches for a while now. Below is my short list of strange behaviors and events I've noticed:
1- Time doesn't pass when my Sims go to sleep and there's a cat in the family. Time simply doesn't "fly" from one day to the next. However, I've noticed that dogs don't interfere with time.
2- I've noticed that cats keep doing the dog barking animation, but they simply don't make any sound.
3- They have food in their bowl, but they keep complaining about being hungry and only eat if I tell them to. This has happened to me a few times.
4- Animals wander around the house when Sims sleep to speed up the time. They simply walk around the entire house, but they don't sleep.
5- When I bought the Country Living expansion, I always locked the gate so the chickens wouldn't get out of the coop, and what happens? THEY STILL GET OUT!
