Is Trilby ok?

[limey]

Originally Posted by Trilby

... Mr. Scout is a high energy level being who LOVES to chase my very favorite cat Spiderman which annoys me and frightens the cat ...

Get a water pistol or squirty water bottle, fill it with water, and whenever, every time, he chases the cat say firmly "No!" and squirt him in the face, the eye preferably, when he chases the cat. Or if you're near enough, whop him on the nose with a rolled up newspaper.
They'll settle down and sort themselves out one way or another, it's early days yet, but try the above.