One of my customer's dogs ate pounds of gravel out of their driveway and had to have $1,000's of dollars of emergency surgery to save his life.

A few weeks ago, my sister's dog found a pair of socks under my nephew's bed and ate them. They became wrapped around her intestines, and again ... $1,000's of dollars in emergency surgery and a month of crate rest and special diet.

I have heard of dogs eating, swallowing and choking on everything from kibble to panty hose.

Yes, things happen. Just like they happen to people. Babies can choke on a piece of cracker one day, even though they've been eating crackers for months. Someone may choke to death on a bite of hamburger or an olive. It happens.

Use common sense, watch your dog with ANYthing you give him. IMO, greenies are no more of a potential danger than anything else.