Don’t worry, lizard meat is very lean and perfectly healthy for the dog to eat. A heat lamp for the lizard might be ok, but on the other hand, if it gets too hot the dog might burn it’s tongue.

You are making assumptions without asking questions. My bearded both have 12 hour access to their cages with appropriate heat and uvb lamps as well as hides, live plants, and the correct vitamins, and dubia roaches, so in the future you should ask questions first before saying something like that to a person. I have trained dogs, especially bully breeds staring in my teenage years. I also trained horses and have an abundant knowledge of pack animals, and pray animals. I breed bearded dragons, chameleons, and sugar gliders. That being said they all have more than adequate housing which you can see if you look at all my previous posts on my page. I have a pit bull (pictured) and a bull dog, and when I began with exotic animals introduced them several times a day to desensitized them. My dogs are actually extremely protective of all my small animals, and are very gentle giants. Also I work at home with my animals. It's all I do and it's my full time work, so they are always supervised. Any of my lizards, or sugar gliders, and even my snake can climb even on my dogs face without a reaction because of the time and training I have put into them all, and continue to every day. I have had Frankie for years now, and as you can see he is very healthy and happy. I would never put my animals lives at risk. Frankie gets out of his cage to interact with my dogs intentionaly, and over the years I have had him he has even established a place in the pack (as far as the dogs are concerned). He did it slowly, and carefully under very close supervision. Also he had only ever slept with my dogs a few times, but this is the first time he has cuddled with one of them. I'm not sure if you know this, but when a bearded has heart racing the right temp, they will not sit under it all day, or in it for those that use heated rocks or pads. The heat is mostly needed to get their digestive tract moving, and blood flowing unless living in very cold conditions. However I live in the Arizona desert where winter has spring time Temps, and ac units still have to be used. So every day Frankie heats up in his basking spot, eats, uses the bathroom, and than spends some time being social before deciding where he wants to sleep. He is only allowed to roam in my room as it is the area of the house that is safe for him. My dogs are just the only other animals in the ground all day, so they peaked his interest early on. I say all this because I do not want people thinking it's okay to be reckless with their animals, and am not promoting that everyone can do this.

My dogs are rescue animals and have consistent training. They grew up with a lot of exotic animals because I breed chameleons, beardies, and sugar gliders, so they have been desensitized to them, and are actually very protective of them now that they have years of experience. It didn't happen over night. Frankie has been slowly establishing himself with the dogs, and has recently even began to follow me around like my dogs do. He is a bit of an oddball. It's a strange sight to see me walk around my room, feeding all my reptiles and sugar gliders, and water them with 2 big dogs and a bearded dragon following my every step, but it happens every day in my house. I have a roommate who recently got 2 puppies, and one of them was being introduced to Frankie, and sniffed him a little too over zealous, and my dogs put the pup in check real fast. I swear they all think he is one of them now

“First time he let him” hmmmm

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He really is, both of them. But my bear was born in my home, and raised with all kinds of animals and children. Socialization early on makes all the difference.