This has been happening since Seasons patch/installment. I play rotationally and every time I load another household their dog/cat will be sick and in need of going to the vet immediately. It's predictable and annoying.
I find they are all dirty when I load I save file; I always thought things like this happened because without us playing the sims they were just lousy pet owners.
Comments
You may like to post feedback on this AHQ EA thread about the issue
https://answers.ea.com/t5/Bug-Reports/OPEN-CD-Pets-needs-are-not-filled-while-playing-another/m-p/6460123#M53434
http://forums.thesims.com/en_US/discussion/817478/hello-come-and-introduce-yourself
http://tinyurl.com/OneRoomOneWeek
http://tinyurl.com/rosemow
My Showcase thread https://forums.thesims.com/en_US/discussion/948861/rosemow-s-rooms-showcase
Michelei that's actually a good idea.
There is an issue with the wellness treat at the moment. It is causing an endless negative mood for the pet .
https://answers.ea.com/t5/Bug-Reports/OPEN-CD-Wellness-Treat-Causing-Endless-Negative-Mood/td-p/6501026
http://forums.thesims.com/en_US/discussion/817478/hello-come-and-introduce-yourself
http://tinyurl.com/OneRoomOneWeek
http://tinyurl.com/rosemow
My Showcase thread https://forums.thesims.com/en_US/discussion/948861/rosemow-s-rooms-showcase