It all depends on if its stray or trained.
You should get a dwarf russian hamster. I have one and I love it. My hamster is so friendly. It doesnt bite but when it is scared it might nibble on your finger. My hamster is so so calm and it is family friendly.
Hamster
if you just got a new hamster leave it alone for about a week, then you can start to put your hand in the cage and let him smell you. slowly you can put treats in your hand and if it trusts you it will crawl on to your hand and take it...even if your hamster is not new this is a good way for your hamster to trust you, and become friendly
If they are both friendly, yes. If not no.
Definitely not. any kind of hamster's personality can range from "the sweetest hamster in the world" to "a little devil"
No, only humans.
hamster tumors are just the same as a humans. When you start to feel small or large bumps on a hamster you will know that its a sign and you should immediately take your hamster to the vet, and they will see what they can do, or if your hamster is in pain, they can put your hamster to sleep humanely.
humans are friendly but to some lizards they are not and lizards are friendly but most lizards are not so friendly so the gecko and other none scary big sharp teeth things so ill give it %40 of lizards are friendly and %60 of humans are friendly
Bottlenose dolphins a quite friendly to humans they are curious around us. Hope this helps.
Around the hamster -no. Not only would the hamster be scared by the noise, there is also a change of it being sucked up. Around the hamsters cage -yes.
No only humans get Head Lice
no that's not possible