Izzy loves it outside in the grass, walking around, and then sunning herself like a pancake on the driveway or the front walk...UNTIL a bird flies overhead OR a car drives past the house...that lizard moves that 520 grams faster than anything I've ever seen move before! The first time she did it I couldn't believe how fast she could run, thank god I had her on her leash and harness because she bolted under my car and out the other side and then yanked herself silly on the end of the leash...it was a car going by that did it the first time, the second time she was just sitting on the driveway with me, towards the end out in the sun, and a lady was just walking up the street, and when she got right in front of us she said "Is that a bearded dragon? That's so cool!" and WHOOSH she was gone, like "I don't know her and I don't like her!!1" So it's a mixed bagged with Izzy, you never know what you're gonna get, but she definitely is one tire lizard once we come inside. She goes from a panicked 100 MPH to dead lizard on the couch in less than 5 minutes...so yeah, it wears them out...
I still wish I had been recording the time the that Duff, my cockatiel scared the living hell out of her, she ran from the kitchen, stood completely upright on her back 2 legs when she hit the dining room and then continued that way across the living room until she ran face-first into the ottoman and fell over...I was laughing so hard I forgot to make sure she was okay, which she was, though not amused. I've not seen her run on her 2 back legs since then, but I'm hopeful 8)