I have a 5 month old lab mix. He's been crate trained since 8 weeks of age when we got him. He sleeps in there at night and when I'm at work.. I'm usually only gone 4 or 5 hours but if I'm longer my mother comes and lets him out for me. Since he's getting bigger, I kind of feel bad leaving him in there, and thinking of just leaving him out when I'm gone. Is this a bad idea? Recently, I've been leaving him out if I'll just be gone a little while (like to go run an errand). He is completely housetrained and hasn't had an accident in several months. Thanks