Mum's ex-biology teacher friend visited and was amazed at how much Jaws (one of my axolotls) had grown since she last saw him. She was also amazed at the way he responded to me, which she described as 'unmistakably recognition' and 'almost affection', and his ability to visually track me as I walked across the room. She used to have an axolotl in her biology department at school, but she said it didn't respond to people to the degree that Jaws responds to me.