They do change during rutting season,I think it’s different for each Basenji.
My boy was less welcoming to big males during rutting season this year, he had 2 scraps with his German Shepard mate that my boy has known since a pup and adored. But he wasn’t interested in mounting, only tried mounting when we came across a bitch in heat on our walk that was giving signs to my boy.
At 1 years old when my boy understood what rutting season was he would sit by the front door and howl his head off, he will look out the window and howl his head off. But when he became 2 years old he learnt to a extent how to control himself, he was quieter this year and didn’t do the crazy howling like he did when he was 1 years old, but did whimper in the morning for walks to search for females.
He tricked me twice in the morning into walking him thinking he was ill but I realised straight after walking him what he did🤣.... he wasn’t interested in going toilet he was interested in finding females!
Cockerpoos and Basenjis are very very different.