It could be hurt or it is mad, you should call the vet
with your hands
It's fine to pick a hamster by the skin behind his ears, but anywhere else it might hurt your hamster.
you open the door of the cage and cup your hands and try to pick him up from underneath if he/she bites you use gloves or a towel
No, you don't. The only reason you should ever if the animal was being bad. Hamsters don't understand that tho, cat can on certain situations, but hamsters do not. and also only qualified animal handlers pick hamsters up to check the sex of the hamster like they did with my hamster
it means you should not pick him up
You should pick up your hamster. Picking up your hamster lets it get used to you, the more you pick it up and play with it the more friendler it becomes.
yes
Pick it up.
with your hands
To pick up a hamster safely and gently, first approach the hamster calmly and slowly. Use both hands to scoop the hamster up from underneath, supporting its body. Avoid sudden movements or squeezing the hamster. Make sure to hold the hamster close to your body to prevent it from falling.
yea...
yes
you have to pick it up
Guinea pigs eat A LOT, this is normal. If she is sqealing and squeaking when you pick her up then she may not be used to being handled. The only way to fix this is to handle her often so she gets used to it.
360,000 times a day
It's fine to pick a hamster by the skin behind his ears, but anywhere else it might hurt your hamster.
Technically yes.. But no you shouldn't.