Well its your space, so I guess in the office you can decorate your space and desk as you please.
It is perfectly normal to see people adorn their desks with family photos and objects that signify their personal interests. However, we have never come across an office space belonging to someone who was so passionate about cats. We get it; if you have a cat (or two) then we won’t blame you for having a photo of them by your computer. But this person is feline-obsessed!