Most of us have cats, dogs, or both; and here is a short study that looks at the coorelation between our weight and their weight.  Surprisingly there is a direct coorelation between one of the animals and us and the other isn't realated.  I would urge you to check it out, you'll find it an easy read and interesting.

http://www.newsobserver.com/life/fitness/story/290862.html

Drive safe & be careful of ice