Cats are not social animals. They merely tolerate us. There are many cats taht are affectionate, but a cat's natural way is to be anti-social. It's their root, as a solitary animal. Only by raising them affectionate can make them lovable.
Cats can love affection, but people get offended when the cat doesnt.
And tha'ts more natural. If we've given the lizard the salmonella first. Salmonella is not a common bacteria from the wild. If the lizard has it, you gave it to him. It's overtiring to hear this concern over and over again.