That depends on the kayak rental company and its policy. While there are plenty of dog-friendly kayak rental companies out there that will allow well-behaved pets to join you on the rental ‘yak, others will not allow dogs on board. Sometimes, it’s not even up to them – certain national parks do not allow pets in general. So, if you’re hoping to go kayaking with your pet, it’s best to call the kayak rental company ahead of time and ask about their policy.