@dedes9 - Sounds like it could be an issue with the patella. I would suggest a Vet visit to have them check that out. Here is a link you can read about it. While it is not a big issue with Basenjis it does show up... https://www.ofa.org/diseases/other-diseases/patellar-luxation
Outbreak of Multidrug-Resistant Campylobacter Infections Linked to Contact with Pet Store Puppies
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https://www.cdc.gov/campylobacter/outbreaks/puppies-9-17/index.html
Multistate Outbreak of Multidrug-Resistant Campylobacter Infections Linked to Contact with Pet Store Puppies