dog is passing stinkly brown watery gunk instead of bulk. dog food is brand that was eaten before; but one week prior was eating combination of people food and dry cat food. I always add Wheat Germ to food for bulk and had been adding a chopped garlic clove until that week. This started two days into the dry dog food with Wheat Germ; dog has been drinking alot of water as it is hot. What can I give,holistically or otherwise to cure diarrhea?