I used sit-inside kayak to bring my dog with me. he sat on my lap and it was comfortable for both of us. For sure life jacket for him was really important, before he got used to it, I had taken him to park with it a few weeks before bring him kayaking. Please share yours with me and others.
I put all my experience I’ve earned on my blog:
https://adorekayaking.com/kayaking-with-a-dog/
I’ve taken 2 of our dogs paddling, both 60# standard poodles. The first was in a Tarpon 160 SOT. She sèemed to really enjoy it until she tried leaning over the edge and a small wave flipped her in.
She was a lot of dog to get back on the boat but she had on her PFD and another paddler helped.
The current one has been out in Castoff’s canoe with no problem .
I also carried a friend’s Jack Russell in the Tarpon. She was very happy to curl up in my lap.
No. It is why I went back to canoes. I love boat dogs and have taken 3 at a time on overnight trips.
Only in my Rec-Kayaks, and even then it’s a bit of a trick because the paddle strokes can be awkward.
But it is fun to take them with me. My wife and I took Olaf out and let him jump between the 2 kayaks now and then.
I now have a canoe so that will be the dog-carrier from now on.
P7080237 by Steve Zihn, on Flickr
P7080252 by Steve Zihn, on Flickr
wow great pictures 
I have taken my dogs on numerous overnight power boat, sail boat, canoe, and drift boat trips all over the West. But a proper sea kayak made for rough water has a well defined cockpit to fit a spray cover. I built a Pygmy Coho which was over 17 feet. It was seaworthy but had no room for a dog so I sold it.
A local kayaking guide I knew years ago regularly took his adult Keeshond on flatwater tours with him. He filled in most of the volume of his 16’ sea kayak’s rear hatch with pool noodles tightly bundled with long cable ties, leaving just enough space for the dog to tuck her butt and paws inside, also kept a piece of outdoor carpet under the rear bungee lacing so she could haul out and ride there. She was well accustomed to the set up and would happily hop in whenever she saw her master getting ready to launch. Somewhere in my dusty digital archives I have photos of the two of them on one of our Fourth of July group paddles to watch the fireworks at Pittsburgh’s 3 rivers’ confluence Point from our kayaks.