Originally Posted by martemchik
The only consequence is less room in your bed.
We don't care either way if our boy sleeps in the bed, he prefers not to because he sleeps by/on our feet/legs and therefore gets kicked anytime someone moves. He'll sometimes fall asleep in the bed, get up after 10 minutes and go and sleep on the colder wood floor.
Same scenario here with our girl.
Another consequence of letting the dog in your bed is the "dog fod" they bring with them. Twigs, bits of grass, seeds and other "fod" get stuck in their hair and end up in your bed. I am not fond of getting in a gritty bed. If you can handle that, you should be fine if you just have one dog.