The zookeeper seems to be an ongoing bug which was a requirement to buy 10 pets from for /Level 96. The devs ended up switching the challenge for that level due to it being unfixable as I assume. They have fixed the pets on OPPrison to where you can get them at the /tokenshop this new ssn and get all the pet levels. Hopefully for OPSky next ssn they can fix it there as well. For not your only way to get pets are from keys/crates!