My dog loves flying with me. I flew a PA-28 across the state to get her when she was 10 weeks old. I put her in a small crate in the baggage compartment. She whimpered on the ground, was quiet in the air, and whimpered on the ground after landing. I'm sure she slept the whole flight.
Ever since, she has preferred to be with me in the airplane rather than alone on the ground. I don't know if it's loyalty or a love for flying, but she seems happy in the air. I just checked and she has 39.2 hours of flight time, in three planes other than the Cherokee I originally picked her up in: Arrow, Champ, and 310. She rode on the back seat of the Arrow and Champ. She has flown on the copilot seat and in the way-back baggage area of the 310. And she has a higher demonstrated crosswind than half the pilots I know.
I could never get her to wear her 4 Paws Aviation ear protection when she was riding on the back seat. I would put them on before starting the engine, and she would just paw at them to get them off. But when she was sitting next to me in the 310, I put them on in cruise flight and she didn't mind. I know that dogs don't live long enough for hearing loss from flying to be a major concern, but I still want to do the best I can to repay my dog for being awesome.
In general, I suggest having a dog-handler on board the first few times you fly with your dog so you can focus on flying the airplane if the dog gets upset. Until you know how your dog reacts to flying, it's best not to have a wildcard in the cockpit without another human to help out.
Another tip is to try your best to find a place in the plane where your dog can lie down. That was an advantage of the rear bench seat in the Arrow compared with the bucket seats in the 310 and Champ. My dog spent most of her time in the Arrow looking out the window, but she did like to lie down when the view got boring, and she can't quite curl up that small on an individual seat. When I don't have to fill the seats, my plan in the 310 will be to pull out one or both of the third-row seats so she has a large area to relax in. But so far anywhere I have flown with my dog in that plane has included legs with 6 people on board.
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