Yup. Intense is one word you could use. Insane is also pretty accurate

I wish we had these contests here for terriers and other small hunting dogs, where they go underground to find rats (which are safe in a cage, so no one gets hurt). Go-To-Ground?... I think you call it in English?
Tiki would have so much fun doing that.

Or lure coursing. That would probably also be great for my little hunter