Dorkfish Christmas Contest in Trackables Posted December 11, 2007 My turn When I was a kid, we had a very large Saint Bernard dog for a pet. The first Christmas we had him, we learned that 200-pound dogs and Christmas trees don't mix. No, not what you're thinking! He got close to the tree and wagged his tail. Yep - managed to knock over a 6-foot tree with one wag. This happened multiple times that year. So the next year, we try something different - we got a 3-foot tree and set it on a table. What happened? One good wag and the table (and tree) toppled right over!