Keeping them out of my grow beds

Ok..now that I know there are 4 footed greens eaters hanging around in the neighborhood how the heck do I keep them out of my growbeds? It wasn't bad enough the bunnies were nibbling my lettuce...Now I got bigger animals that are gonna want to eat everything else....aaaaaaarrrrrrgggggghhhhhhhhhhhhh the trials of living in the burbs.