reptiles are very smart. few days ago was at scales and tales, and this monitor lizard was opening the door to the tank he was in. the workers would close it and he'd go right back and open it agian. was funny. but he knew he wanted out and how. lol ill follow ur research lol ik it was just an example. basically i think any animal is capable of showing affection. maybe not specifically to humans, i will say some animals should not be house pets....but their still able to show affection.