My biggest fear is that when we get our dog things wont work out for one reason or another. Maybe we will make a huge error in judgement while adopting the dog, or maybe we will fail him or her. Not being a good mommy to my dog is my worst fear.
Then my slightly more realistic fears: running off, the dogs in the neighborhood not liking him/her, wild animal problems (we have all kinds of poisonous snakes, though they are not common, bears, foxes, coyotes, badgers, skunks), not getting along with my kittehs, and not liking me. =(