Hi cricketer
Most incidents with pets travelling by air are due to tranquillizers. Please inform your vet to not give that advice any longer.
The best you can do is to train your dog to his travel crate. If he doesn't like the crate at first - leave the top off, install a cosy bed and work with treats. Later add the top (without the door) and a later stage also attach the door. And then train little by little to close the door - later leave the room for a minute and always a little longer.
If the crate fits in your car, have him drive around in that. And if he is not too heavy, even lift him around in the crate. All this will happen during the trip and if he has experienced this in a positiv manner (with treats) he will not be as stressed.
Many pet stores don't provide accurate information about the size of the travel crate. Your dog must be able to stand upright inside the crate without touching the roof with his head (not shoulders), turn around easily and lie down comfortably.
IATA provides the details on the minimum size crate you should have for your dog: http://www.iata.org/whatwedo/cargo/l...ges/index.aspx
The size is not just for his comfort, but also to assure sufficient airflow - especially for snub nosed dogs (i.e. Pugs, English Bulldogs) or when travelling during high temperatures. Don't safe money on the travel crate!
If you have a chance - go walk your dog near the airport (smell & noise).
Don't feed your dog short before check-in to avoid an upset stomach. They can easily go without food for a while. Water is important and should be provided at all times. If you can, freeze the water in the bowl, so it remains in the bowl until your dog is in the air.
Put in blankets that your dog is used to and even a piece of cloth that bears your scent.
I recommend not to put both dogs in one crate. They can react differently during a stressful situation and harm each other.
Hope all this helps - safe journey! (just realized you are flying today, so this may be a little too late... )
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And in regards to NYE and 1. August:
If you have a travel crate and your dog has gotten used to it - try using it when the fireworks go off. I got a dog myself that is really scared of fireworks. On 1. August, I didn't come up with that idea and he ran from one room to another. I tried to ignore him, but he went crazy. On NYE, I put a travel crate in our house two days before. On NYE when the first firework went off, he went into his crate and didn't leave it until the next morning (without me closing it).
Maybe for some other dogs this may work as well.