Lets face it, for most people, our pets are just as much a part of our family as we are. Even if they are just livestock or working animal they are an investment in your time and money and emotions. So being prepared to take care of them in an emergency just makes sense!
Lucky for all us pet people the ASPCA has a pet preparedness list: http://www.aspca.org/pet-care/disaster-preparedness/
It even includes special considerations for birds , small animals and reptiles, cause lets face it not everyone is a dog or cat person.
FEMA has information for animals that includes livestock : http://www.ready.gov/caring-animals
Being prepared for an emergency does not make you crazy or a nut job it helps give you piece of mind so you don't have to worry as much about things that happen and being prepared to take care of your animals gives you one less thing to worry about.
The time to think about an Emergency is before it happens cause after it happens you'll be too busy!