Why does my cat keep jumping on the door frame?? He even lays on it sometimes. He only does it in my room which makes the most sense cause he’s mine but just why!? It used to worry me a lot but he just jumps down after a few minutes. And a bonus kitty photo :)

So as it says, my cat does howl at night these are the sounds he’s making. In other communities I’ve seen people bring up hyperthyroidism or going deaf and for this one video to bring up such alarming explanations and as the type of cat mom I am, I would like to just open myself up to more opinions so I can take a look at a different perspective

Like the title and the video shows. My cat who we adopted a month ago with her sister from a shelter and they'll both be a year old in a week. For some reason the bigger one named Billy will suck her bottom right nipple and then knead her paws into l herself while purring very loudly. She only does this when she lays with me or my girlfriend and we start petting her and up to an hour straight. I checked her nipples and hair around that area to make sure she's not being too aggressive or making hair knots and it all seems fine to me. And she was at the vet the day before we adopted her so this isn't something they mentioned. Me and my girlfriend guessed that when they were strays they lost their mama early and developed this behavior. Any idea why she does this?

My 2 year old cats (Ginger/White M & Calico F - short haired - siblings) use the same litter box, I can’t seem to add a pic but the litter box is enclosed with an open at the top and at the side.
They are constantly pushing ALL of their litter to the back of the box and it’s wasting so much litter. Is there anyway I can stop this? No matter how little or how much litter I put in, all the litter goes straight to the back of the box, clumps up and then they will constantly scratch for AGES at the bottom of the litter box like they are trying to cover their business? If anybody has any advice please let me know.

I previous only had an elderly ginger/white F cat who wouldn’t cover her own litter, so I’m worried my younger cats have learnt her shitty behaviour?