Animal Planet host Travis Brorsen ushers a four-month weight loss and behavior modification journey with pet owners and their overweight animals. Is your pet tipping the scale? Don't take it personally. Over 60% of American pets are obese. Also, Licensed Veterinary Tech and Certified Professional Dog Trainer Debbie Martin is here to help us decode our pet's body language She says there are some common signs of distress or anxiety that people miss. Also, a new study out of Colorado shows a four-fold increase in pet cannabis-related medical cases and much of that is simply pets getting into their owners' stash. The active chemical in marijuana called THC (it's what gives users the high) is toxic to pets. Veterinary experts say that cannabis can damage the neurological system in pets and can sometimes be fatal. Also, many of the marijuana desserts and sweets are made using Xylitol and artificial sweeter which is also extremely toxic to dogs. Also, pets seem to go missing all the time, but it's not every day that they are reunited with their families. Jack the cat and his family was incredibly lucky! Ten years ago Jack went missing but because Jack had been micro-chipped as a kitten the Sanctuary where Jack eventually ended up was able to find his family after all that time. And finally, there's a new discovery that's just hit the world of guinea pig lovers. Dutch researchers say the cute furry rodents may carry germs tied to a very serious type of pneumonia. It's caused by the same bacteria the causes pink eye in guinea pigs and three people in the Netherlands have wound up hospitalized for pneumonia after contact with guinea pigs.