Put scratching posts (both vertical and flat) near the areas where they are doing this. Redirect when you see them doing it in the wrong spots, and you can get sprays to make certain areas more/less attractive for scratching. They also might want more play time. Scratching is normal cat behaviour but there are ways to give them healthy ways to practice it.

Because we love em!

Scratching in the "wrong" places tends to be either from frustration, or a lack of stimulation/appropriate places to scratch.

You probably already have some scratching toys/mats/spots, but try experimenting with different orientations; attached to a wall, 45 degree angles, those wave pattern ones, not just straight flat on the ground.

Also, try different materials. Some cats love that rope, others want cardboard, and some are very picky or want both.

If your cat is overweight and leaving streaks or not drinking enough, you should talk to a vet, ideally making an appointment with a nutritional specialist. It may be they are allergic to something in their food, causing intestinal upset. If that's difficult, you can also simply try giving pouches of small gastrointestinal wet food and seeing if that helps.

It may also be because they are too fat to clean themselves properly, and they butt-scoot to clean it that way? You can get special diet food that fills them but doesn't have as many calories.

beavers... you have a beaver.

give it a tree trunk ffs.

wow

Teach them not to do that, for starters.

In the cat's defense, the furniture appears to be made of foam.

Get a scratching post, or a sacrificial chair maybe?

When our new kitten decided her favourite scratching post was the doorframe outside the bathroom, we went ahead and bought one of those hanging scratching mats to nail over it.

Saved the doorframe, and have a happy kitten.

Based on what the internet told me about cats, this life often chooses you.

What others have said. With regards to diet and drinking - look into raw feeding.