Last night my bearded dragon Ozzy, passed away.I wasn't sure why, as he had recently had a change in breathing, i didn't think much of it, because it could mean many things, he did have MBD from his previous owner, soon afterwards i noticed he was not wanting to eat veggies only bugs, i thought it was just because i had been feeding him more bugs than veggies, so again i didn't think anything of it, Last night i tried to feed him mealworms and he wouldn't eat them, because he was so skinny from his other owner, i decided to force feed him because he also need calcium and water.I got back from a trip to the store, and i went to go pick him up and he was dead and i noticed he didn't digest his food and instead he pooped just mealworms. I recently asked a member on here for help, because he was having runny poops for over a month, she suggested it could be stress, his lighting, or parasites. I got him a new tank, new lights and a new thermometer.I also noticed when i picked him up, that his beard was black on the sides. Can somebody please tell me why a healhy bearded dragon would die so sudden and unexpectedly? And what could i have done wrong??