Thanks for bringing the problem to my attention. I thought that I had fixed this bug, but it turns out that, due to a bug in the MySQL database we use, my fix does not work. I've corrected it properly now, and it won't happen again.
I'll fix the pet counts of all affected users shortly - don't worry, your pets aren't lost
.
I took the site down for maintenance for about 30 minutes to make this fix, your group counts should be correct now.