You find everything you need from Thai customs page. Also take rabies titer test in your home country before you come to Thailand IF something happens and you need to fly Europe, USA etc because you need to wait 3 months for titer test. In Thailand give every month medicine's against all kind of paracites, deadly brain worms etc.
hmm, how to say this, (english is not my strong skill), negative comments don't necessarily be negative, they try to give you example what do you to expect. So you should read negative comments like you take there only tips, not negative parts. You know what I try to mean? 😊 I had my dog in Thailand one year and you need to be extra careful (depend area) because of stray dogs, snakes, people poisoning dogs, you need to give medication every month because of ticks and heart worms etc. I suggest house with wall because of stray dogs and (depend area) monitor lizard's. My dog is my family, I don't leave my dog behind so that kind of comments are just stupid, ignore those.
I give you tips what to bring and what not necessarily, my own experience of course. Dogs, women things, health, etc. And useful groups. Just send pm if you want 👌
my dog sleep almost all flight. I was so panicking because it was her first flight but everything went well. First she was little bit scared and I put my hand to the bag and after one hour she go to sleep.