My degu won't stop chewing her plastic cage and has put a long hole in the plastic. I have tried to put her wheel in the cage but she runs herself till she almost can't stand so I can't put in there. I give her attention lots and that doesn't help. She is a single degu but has spent 1 year being alone we have a dog that plays with her lots every day same with our cat. She has food and water but still chews I need tip's. Her diet is pretty steady too she doesnt live off of the degu food she is very fond of it so she eats chinchilla food and hamster food.
Thanks please let me know

She really needs a buddy, to be honest. I would try to locate another female, preferably a baby for easy introductions.

Anyway, plastic cages are not recommended for degus for that reason. Switch to a cage with a metal bottom. How big is her cage? The chewing is normally out of boredom or lack of fun things to chew. What toys does she have?

Plastic isn't recommended,
You could locate a breeder, or a petshop which sells degus,
But you could also give her more toys and out of cage time.

It takes a lot of time and attention but I've read that some degus can live fine alone, but personally I wouldn't take the risk.

And you can build a cage which is cheaper with wood and wire mesh (flooring wood to prevent bumble foot )