Bana, the foster we had until about a month ago, let out a single outburst of air, it sounded a lot like a bark, but you could hear the air being pushed fast out of her lunges, so I always thought of it as her way to join the two barking dogs. Otis has done that once, when we had people pome over he had never met before..our other non B dogs were barking of course so I think he felt the need to "bark" as well.
Nala has always been quiet. She'd make a "boof" or a "berf" when startled or excited and she only yodels when really, really happy! It hasn't been until recently (10 yo) that she will "roo" more often and it does seem to coincide with my sister's dachshund/chihuahua mix's barking and getting attention…..hmmmm :rolleyes:
But still no "barking" learned from her...
Good luck with the puppy search. Keep us posted...
Gossy grew up around other basenjis but she still makes a kind of bark (haven't figured out the trigger yet) - that's about what it sounds like too "bark" - she's the most vocal beastie I've had with her yeow, roo roo roo, ohhhh, etc., but still no true yodel 
My friend has two Italian Greyhounds and she watches my older B on occasion. After staying with her IG barkers for a long weekend he came home making a lot more noise than usualy. It doesn't sound like a bark though rather a 'woof' as others described.
He now does it whenever he hears someone at the door, a strange noise, etc. He even did it to a stranger walking by the other day! It was crazy and shocking as he is usually very quiet.
Milo lives with one Ridgeback who is very vocal and gives quite a loud hound like bark when something alerts him or excites him. Kris, our other Ridgeback just doesn't bark. He will wuff in his sleep, but does not bark, he takes fright when Luke barks. As for Milo, he was spooked a bit by some guy out running today and made some 'buh' sounds. Almost like a wuff but not quite, hackles raised too, i think he has small dog syndrome!
hmz I have 4 barking dogs and 4 basenjis ( 2 live with my parents but we go for walks together almost every day ) and no my basenjis still don't bark, well 1 bark and that's it, on the other side, my other dogs DO yodel sometimes, but then again, Ibizan hounds are known because of their vocal qualities 
zoey has barked a few times the first time she was startled and let out 3 burf sounds like she had the wind knocked out but them she met a person she took an instant dislike to at my friends house. Everytime he would try to get near her she would growl and end with a ruf sound.
Also there is a B on brat this is what they say about him
if you always liked the natural good looks of a Basenji, but wished they barked, then Peyton is your boy! He is a Basenji with extra vocal talents and is a self-contained alarm system (early alert?) because no sounds get by this boy. We suspect Peyton barks because he has learned this behavior from the other dogs he has shared his home with. In his original home, he lived with a miniature Pincher and in his foster home, he lives with Oscar the wonder wiener mini-Dachshund, who barks at the wind.
I have a VERY vocal lurcher and I'm convinced that Rocco has learned to bark because of her! It's not the usual 'woof woof woof' but that sort of single gutteral sound that they make and he just joins a few together. He usually does it when he wants to play. He has been known to do it a shows, which can be very embarassing, and at that point I tend to disown him (only kidding) lol.
Abby makes a noise every once in a while that could be thought of as a bark, but what I think she does is she yodels but cuts it off short so it could sound like a bark! My new baby that I am fostering to adopt doesn't make any noise at all except when he yawns. Now I do have a dog that does bark (enough for all my dogs) but Abby has never caught on to it. However Abby did teach her how to sing! We live in a community that still has a whistle for our volunteer fire department and everyday at noon the whistle goes off, at first Missy would just bark and bark then when I got Abby she sings to the whistle and now Missy does too. I'm hoping she will teach Cooper how to sing as well! 
Abby Basenji..what a sweet story..I would love to hear my dogs sing along to a whistle.
Me too. We had a Siberian Husky mix growing up in NJ and she always sang with the noon or the fire whistle.
I hope you hear the sweet sounds of Cooper singing soon…
