my whole family has forgorten what they are called and i want to buy one
They are called tunnels. Google Guinea Pig Tunnels.
In the past, they were known as habitrails. Tubes is another common name for them. Hamsters and gerbils like those round balls they crawl around in as well.(hamster balls.)
Plastic balls (hamster balls). Please do not get one for your pet. They are scary sensory deprivation chambers. The animal doesn't get any stimulation - cannot explore the world around them. They run because they have no option. It's horrible for them and a very very very cheap and nasty 'get rid for a few minutes because I can't be bothered' attitude by the human in charge. Please do not use these - they are very cruel.
