I just moved from an old apartment with a lot of sunlight, and a lot of birds and chipmunks that played outside the windows. Now, there's less sun, and no animals for my cats to look at and want to kill, heh. Also, there's a lot less space. I'm already noticing a big weight gain in one of them. What do I do? I think my cats hate where I moved too.
Move again to an area where your cats might be happier. Only kidding. Buy a cat gym/furniture/tree for them. There are plenty of cat toys avail. You may also want to try a bit of cat nip. vetcare