I have been giving Shane, 4 in 1 probiotics since he was a puppy. The breeder started the puppies on it and I've continued. I see a lot of people give their dogs yogurt, my question is, could I use yogurt instead of the 4 in 1 probiotics? I have to order it over the internet and it would be easier/cheaper to use yogurt. Any suggestions would be greatly appreciated. Thanks.