What are the pros and cons of being a zoologist?

I'm thinking about becoming one. I would love to work with and research on pigs,squirrels, monkeys,dogs,and cats. The only thing is that I'm afraid of real life bees, alligators, crocodiles, sharks, and poisonous animals. Would there be any reasons why I would have to use chemicals? I wouldn't have a problem working weird hours. I would not be able to handle putting animals to sleep. I would love to teach children about animals. I don't have any interest in aqua animals. Any questions?