Check out these users' questions on the strange things their dogs do. This might answer some of your questions too.
Why is my dog trying to bury its food on the floor?
Why does my Jack Russel destroy everything?
Why does my dog hunt everything in our garden?
Why is my dog afraid of so many things?
Why are our dogs urinating in the house?
How do I deal with a depressed dog?
Why do my dogs hate being groomed?
Why does my border collie herd the two huskies?
Read more about why dogs do these 8 weird things.
(Compiled by Susan Erasmus, October 2012)