Sorry I’m not sure exactly what you mean.
They become more tired if their balls remain in tact?
Or if you neuter them
nostr:npub1es8xt6ykqkchcfwszl65yay58lk6z5sr7z75sj0fdqa2s7jnf3dqhfepmn , What you think?
My only take is that without cut, they'd to be tired with more effort, that being more active and playful...
Discussion
More active, with more energy if the balls remain intact...
But that's my ignorant take
This female German Sheppard we have is neutered, and she certainly behaves more like a male dog...