I have been with my SD on Kilimanjaro Safari's ( they will strap the dog in- don't know how they'll do this with a small dog but it must be done according to the CM as they don't want the safari animals to see or smell your dog),
They only allow one SD per truck on the Safari. I had to ride with my daughter and my hubby rode with our son. It was a pain, especially since they could have strapped both in the same truck. But it was still a fun ride.