Rebecca,
I'm not familiar with that particular venue but from the photos on their site, it looks like they have a mix of daylight and flourescents. And not a whole lot of light from what I can see.

Are you shooting the Clearwater Kennel Club's Responsible Pet Ownership Day? All I can suggest is that you get there early and take a few exposures to see what you can get at various ISOs. You may be able to use your zooms wide open for static shots but I don't think you'll have enough light for action with them.

Good luck and let us know how you do.

Jim