A dog is truly a man's best friend.
If you don't believe it, just try this experiment.
Put your dog and your wife in the trunk of the car for an hour.
When you open the trunk, who is really happy to see you!?
I don't have a dog but I've got a cat. What will happen when I put the cat and the wife in the trunk?
Wait a minute. I don't have a trunk. I've got two trucks and an SUV. Oh, one truck has the bed cover, will that work?