A lot of people were forced to leave their pets behind. This is truly sad because pets are completely dependent on their "humans" for support. They don't understand the emergency, they just feel abandoned.
Please consider making a donation to the SPCA or the Humane Society of the US. The Humane Society is selling a "Cause Collar" (kind of like the message bracelets). Proceeds will go to support animal rescue efforts in the affected region.
For more, see:
https://gateway.hsus.org/hsusdev/
Edited to add: watch this video of HSUS volunteers rescuing an abandoned dog. I started crying when the dog wagged his tail at the end:
http://stream.realimpact.net/?file=r...rescue9-7.rmvb