As I have mentioned before, there are many different bike trailers for dogs that you can choose from. When it comes to size, there is no perfect formula for this – it’s all depending on the build and structure of your dog. However, most manufacturers list the dimensions of dog bike trailers in their product descriptions. It’s good to know your dog’s weight, breed, and size before getting one.
Some brands offer a modular design that will allow you to extend the length of the trailer if necessary by simply adding an extension piece that weighs around 6 lbs (2,7 kg). That is especially useful if you have a small dog that will grow into a full-sized one.
You must attach your dog’s harness to the special canine seat belt of the bike trailer. This way, it will be one hundred percent safe for him while enjoying his ride in it.