Thanks Pam,
I will let you know how it goes with Darcy. She was 3 when a disc ruptured in her back - we had emergency surgery done on her, but unfortunately the spinal cord was damaged. She has had extensive therapy, so she does not have paralysis, but she can’t use her back legs. We in the process of getting her a doggie cart but thought she would like to ride in the trailer, and since it does not tip even if she gets excited and moves around, it will stay upright. The BeBeLove trailer is really sturdy and has a third wheel with separate handbrake so it can also be used as a jogger when not attached to the bike. Next time we have it hooked up I will take a pic. We had looked at the LBS at the dog trailers too, but they were a lot shorter than the one we got. It has screens on the side too which help with ventilation. A friend of mine used to cycle with his toddler and he had a similar trailer - he would put frozen ice packs along the bottom and cover them with a quilt and then strap in his little girl to the seat. He attached a battery operated fan to the side and she had a cool, comfy ride in our very hot summer temps.