Not all dogs appreciate delivery guys. In fact, a lot of them hate it when mail carriers, UPS drivers, and pizza delivery guys drop by. They think of them as threats and their presence trigger fear.

Fortunately, that’s not always the case. Some dogs are more friendly than others. They don’t feel threatened whenever delivery trucks stop by their area. In fact, they actually feel excited whenever they spot the vehicles. For them, it means that treats are coming their way.

If you are finding that hard to believe, check out these 50 UPS drivers who were lucky enough to meet super friendly dogs at work.