If you already have a sense of where you're headed, check with the airlines about whether to get a hard or soft-sided crate.
Start crate training (for more on this, see here for a dog or here for a cat). Ultimately, the goal is to give your pet good associations with the crate so that he feels comfortable spending some time there. So, keep the treats coming.
HSUS recommends crate training for at least a month beforehand, if possible.
Getting the right documents
So now that you've got the gear, and your pet is finally warming up to the idea of becoming an expat, it's time to research the destination country's requirements. Check out this resource from Pet Relocation, which keeps country requirements updated weekly. Then, visit the vet for a few key documents and discuss any health-related questions you have with your vet.
1. The rabies vaccine. Even if your pet has had a rabies vaccine in the past, you'll need to make sure it's in the right timeframe before you depart.
For instance, if you're thinking of moving to Canada, the rabies vaccination must be more than 30 days old but not more than 1 year old, if you got your pet a one-year vaccination, and not more than 3 years old if he got a 3-year vaccination.