Letting your dog sleep with you in bed may or may not be advisable, depending on the health of the owner as well as the pup, veterinarians Ryan Llera and Lynn Buzhardt said in an article for VCA ...

Dogs have shorter sleep cycles that last 45 minutes at a time and only spend 10% of their sleep in REM, or the deep-sleep stage. Compare that to our 90-minute cycles with 25% of it spent in REM.