RIP, Maru.

Edit: Mixed up my famous cats… I saw that Maru passed away in September - he was the white-and-tortie one who would slide across the floor to dive into boxes.

The cuties in OP appear to be Shironeko and Tyatora from kagonekoshiro.com. “Shiro” AKA “Basket Cat”.

Help, I’m dying of cuteness overload

I knew it, Squishmallows are real!