Sorry to be so late on commenting here. There are several Facebook groups you may want to join. 2 are Basenji specific.
Bladder Stones Basenji - https://www.facebook.com/groups/1505737939475808/
Canine Cystinuria - https://www.facebook.com/groups/1264949876904169/
The third group is secret and you need to be Facebook friends with a member in order to join. Contact me if you are interested in joining - Basenji Cystine Bladder Stone Awareness.
To give you an idea of the contrast between Basenjis and Border Collies, my BC once spit out a pill, I said "Blackie" in a disapproving tone, and he picked it up from the floor and swallowed it!
@mryltis
Read this comment from @morgansc within this post dated May 30, 2019, 7:49 AM. It answers your question. Ideally it is best to wait until age 24 months but no early than 18 months.
https://basenjiforums.com/post/177284
