First, they focused on the dog’s emotional and mental problems. Isaac said that the key is to show dogs mercy. And when they have realized that they are loved, they will reciprocate the affection. In no time at all, Cash became a playful and loving dog. This was when they started teaching him tricks.
One of his most famous tricks is pushing a grocery cart around a supermarket while his trainer gets items from the shelf. The dog patiently waits with the cart and stands up on his hind legs to push the cart when it is time to move on. Isaac said that this is very useful for people who use walking aids like a cane or a wheelchair. Cash can even push the cart while turning corners.
Aside from his cart trick, Cash also does several other tricks. He has an amazing balancing act and can walk tight and narrow surfaces. This has made him the center of attention. But more importantly, Cash is now living a better life than before.
Source: Inside Edition via Youtube