Sounds like your dogs has cestoda, or advanced stage tapeworms. Please know that besides being gross, they are also VERY uncomfortable for the dog.  Because your dog is so old (he's considered elderly) you need to go to a vet to get supervised care. They will probably give you something called Droncit to get rid … Read more

Your dog will be fine! The kind of mushrooms that are on pizza are no problem for your dog, but onions should be avoided. You do need to avoid mushrooms outside though. You can see a full list of outdoor plants to avoid at www.runningthepack.com/blog