The petcare training book goes over some basic animal info. It's better than nothing. Something as simple as you have gave would not suffice for a firing. It takes time to hire and get people in the groove. People can't be fired left and right. If repeated offences happen they they certainly should be written up and so on depending on the severity of the "screw up". What exactly do you have against Petsmart, just wondering. Some things stores can change, others are set in policy and disobeying them (even if it might be the right thing)can lead to being fired.