Have hijacked another thread but it needs its own really..
I have a collie.
Its always said these dogs need a job, they need mental stimulation/brain games and this will leave the collie calm and satisfied.
This isn’t the case for mine!
When I try and do some training she gets super excited and rapidly goes through all the tricks she knows.
Although she is very clever I have to be very careful training her because if I don’t give her the treat (because she hasn’t done what was desired) she gets annoyed and frustrated.
When it comes to games, again, she is very easily frustrated/stressed.
Take the commonly recommended asking for a stay, hiding a ball or treat (where can see) and release, she will run like a lunatic to the ball or treat, repeat a few times then no longer wants to search.
She just wants to be given the treats or play with the ball and will start whining and grumbling if I hide it.
I tried a game where you put food under cups and move them.
She selects the correct cup each time but after a few goes she starts getting cross, angrily bashing the cups sending them flying.
She’ll start crunching the cups if I continue.
She just wants to eat the treats, not find them under cups!
Or tidying up toys.
She will put the toy in the box then immediately take it back out and throw it at me for a game. For every single toy.
Dear god the rage if asked to just put them away in the box.
She grumbles/growls and whines and picks them up really angrily and literally throws them into the box.
Fetching objects; she knows what most things are.
Told you she was clever 
I can ask her to get me something or point at it if she doesn’t know it by name and she’ll do it once, possibly twice then the grumbling starts...
If something she wants is stuck, she’ll try a few times then stare at me, the object, me, the object until I get it for her.
She loves a walk and will walk/run for miles but so called ‘brain work’ seems to really piss her off..?