I don't know about all Basenjis, but mine have shown no sensitivity to poison ivy. Unfortunately, I do! Walking my guy down forest trails where there is a considerable amount of it, I ended up with rashes on a number of occasions…...and yes, I do know what it looks like and try to avoid it.......but my dog was unaffected. He does seem to have a seasonal problem with ragweed, however. (guessing a bit here, he hasn't been tested, but there appears to be a correlation that indicates a contact allergy, not airborne......he is affected when he runs through it in the fields, not if we stay away from it by walking on the road)