I also have a Basenji/Jack Russell. He is a fantastic dog. He is like having a human living with me. He understands most things and very smart. Other da he started to chase a rabbit and I yelled no and he stopped on a dime. We don’t even use a lease because he stays close to us. He is the best rescue pup ever.
Stops on a dime chasing a rabbit? Are you sure he’s Basenji!?! Lol.
The Jack Russell part wouldn't be slowing him down either. They normally have a very high prey drive and in my experience are extremely tough dogs. My girlfriend's JRT bitch put my dog aggressive boy in his place in less than 30 seconds. Very unusual for either of these breeds to be biddable when a chase is offered.