In the very first scene, a woman is pouring food into dog bowls as the dogs sit patiently without moving until she gives a command that it's time for them to eat. It's then explained that this is a dog rescue center, and these dogs are looking for permanent homes. No matter how well trained, when a dog has found itself in a shelter, there are an overwhelming amount of reasons. They could have been strays, or abandoned by their owners, or abused and taken by the authorities etc. So there is no possible way that food would be put in bowls without the dogs immediately going for it, or even avoiding it. And they also would never stand happily and patiently in a straight line. If someone walk into a shelter, even the cleanest and best, the dogs are kept separately in order to reduce fear. Not all dogs get along. This movie portrays real shelters in the country totally incorrectly.