Glad to have you here with all of us basenji lovers. Have you pictures of your basenji? We would love to see them. :) Also, many people on here are 'related' by their dogs. Do you know the sire's and bitch's name?
LOL agile, Sayblee did yodel for me but much more for the spousal unit. Arwen doesn't do it at all and at 8 not likely to happen. Cara has had one almost yodel. :( She does musical yawns a lot though, and barks. Well more like boofs.
Bungwa has a very dry mouth and I only managed to get a very tiny white patch on the test card but it was still sufficient to do the test with that. It only turns white when it's dry - the instructions are quite explicit. Of course as Pat says it could be a bad test form.