I've just done all the stuff for my friends to take their dog back to the UK. The dog must have a pet passport and be chipped. Prior to going the vet has to take a blood test which is sent to Ankara. A few days before the dog is due to travel it has to be wormed and the details entered on the pet passport. The dog must travel on the same flight as the person taking the dog to the UK and it must be collected by that person in the UK on arrival. Whilst some vets will recommend Turkish Airline (why wouldn't they?) you can book with Thomas Cook via their agent in the UK (Ana Aviation), whom I have to say are most helpful. The cost for the dog I'm referring to was £544 (36k in weight) plus you have to buy the crate for the dog to travel in which must conform to specific standards (400YTL). You can contact lisa.Fitzpatric@ana-aviation.com When the payment is made etc. she will e-mail the necessary documents required. She is excellent. Hope this helps.