Working on Zookeeper: Like a Zoo!

Kevin James in Zookeeper

Tracy Bennett

updated 07/06/2011 AT 5:00 PM ET

originally published 07/07/2011 AT 9:00 AM ET

How does a trainer deal with nearly 75 animals on a movie set? Have a well-catered craft service, for starters.

And on the set of Kevin James’s new comedy, Zookeeper, animal trainer Mark Forbes had just that.

“It not only took a lot of food [to feed all the animals] but many different kinds of food from many different sources,” Forbes tells PEOPLE. “My assistant Ryan spent about half his day running around ordering food and picking it up for the animals.”

The lions, bears, wolves and various birds of prey were fed meat from a butcher in downtown Boston; the elephant, horse, and other barnyard animals enjoyed hay and grain from a race track supplier; while Crystal the capuchin monkey and the porcupines ate fruits and vegetables from a grocery store.