Xylitol in sugarless gum is toxic to dogs

Sam Caress and Jordan Pellett recently adopted Gunner. He's helped fill the hole in their hearts created when Luna, their two-year-old dog, died in April after getting into some chewing gum made with the sugar-substitute Xylitol.

Xylitol is safe for humans but can cause severe low blood sugar, seizures -- even liver failure -- in dogs.

Sugar-free gum is the biggest culprit. But Xylitol is also used in some sugar-free candies, chewable vitamins, even some baked goods and peanut butter.

The number of products is on the rise and so are the calls to the ASPCA's Animal Poison Control Center, from 82 in 2004 to more than 3,700 last year.

More at CBS News; video at the link.