Frank Parker
https://frankparker.website
Here is a photo of my Staffy Rocky (4) and Cat Holly (5). 

Bluebrummie
Wonderful pictures and I understand Rocky being your best friend but please do not say the cat -Holly (will come back to that terminology later) is boring - you are offending cat lovers on this site and no cat is ever boring. Believe me.
Maybe you have allowed her to become bored.
Cats are such wonderful creatures, so exciting given the right stimulation.
You may own a dog but you will never own a cat!!!..
You say that you had Holly first - about a year before Rocky - and Holly was great, playful and everything till you got Rocky - could this mean you are spending all your time and energies on stimulating Rocky and maybe are ignoring Hollys wants and needs.
Don't intend to offend - just purely an observation.
Regards