Izzy has a friend (a rat terrier) who is a super-cute, intelligent, and energetic and he bears a strong resemblance to your baby. He exhibits many of the same characteristics as the Jack Russel. Being a terrier, he is a VERY busy dog. LOL
Whatever her heritage may be, she is adorable.
Oh the pain of your question and my answer.
Sobbing. I have 2 basenji… neither of them yodel. Arwen doesn't even do the basenji BOOF (though she does make demonic noises when annoyed). Cara is great at boof boof noise, and she DOES the yawning noises.
But there is a scumball in FL breeding basenjis with probably corgis.. at any rate, producing "low riders"... bodies like basenjis but dwarfed legs. They yodel their freaking heads off. Sniff sniff. They boof. And I know a lot of other mixes that indeed do not dog bark, but make all the basenji noises.