Welcome to Wikianswers Pets. What would you like to know?

Typical things are: vomiting, change in color of their urine or poop. They may show lack of interest in those activities that your dog normally has interest, not wanting to eat, drink etc. If you have had your dog for a while and you are an observant person who has taken interest in your four legged companion, you can tell by their behavior, their eyes, nose, how they interact with you.