I just bought an Australian Shepherd 2 weeks ago. He is a little over two months old. From what i understand, they need constant mind stimulation. Does anyone know activities or games that could do that? Thanks!

Constantly teach him tricks
Get three cups and hide a treat under one and have him find it
Teach the stay command then play hide and seek. You hide and when you tell him to break the command he finds you.
Set up hurdles in the backyard and teach he how to do the course.
My dog loves all of these!!