I agree with Mandilur - should have elaborated more in my last paragraph above.

Some airlines won't take a pet during the summer month unless you use a pet relocator. The reason for this is that a reputable relocator has a network of other pet relocators to handle any emergencies. For example, should your flight have an unexpected overnight stay in Dubai the pet relocator can immediately arrange for a Dubai-based relocator to care for your pet until the flight is ready to depart for its original location.

Definitely worth checking into, but generally speaking there is no need for a relocator. We moved our dog from Australia to the U.S. without using a relocator as well.