With new federal rules requiring airlines to report the number of animals killed or injured on flights, several major carriers are refusing to allow pets to be checked as baggage this summer because of dangerous heat in cramped cargo holds.

In March, Congress approved new rules requiring U.S. airlines to disclose how many traveling pets are killed or injured. The American Society for the Prevention of Cruelty to Animals hailed ``a stunning win for animals that must travel by air.''
http://www.nytimes.com/aponline/a/AP...on-Planes.html