Everyone beat me at it but I think you can start working at kennels when you're 15, depending on what their insurance is. I am 14 but I can't work at the one Sassy stays at yet because their insurance company(I'm guessing if a dog bites the person or if the person kill/hurts a dog) only covers people 15 years old and up. Also, what about a horse barn? You could possibly work there if you're old enough. Doesn't your dad live on a farm? That is experience right there! Good luck!