In July, when my puppy was 9 months old, I let him try some people food for the 1st time. I gave him some cucumber. The next morning he was just not acting right, and then started throwing up poop, shivering and whining. I took him to the vet and they diagnosed him with colitis and said that his little tummy just may not tolerate foods other than his puppy food. I feel terrible when we're eating things that I know should be safe for him and he really wants some, but I'm really scared to give him anything else now. Growing up we'd always given our dogs veggies, and they were fine. Is it common for toy poodles to have such sensitive stomachs?