Gold Time: Powder Street 4

You start off with $1000, and need to earn $2000. (Unfortunately you can't sell off your guard dogs, but they will help protect your chickens from bears!)

Usually, the trick to money levels is that the less you buy, the less you need to earn! In this case, though, don't be fooled by the factory signs -- chickens won't get you two grand in 3:30. You'll need to buy a pig.

Pigs make ham, and each time yours drops a ham, sell it at market for $200. When you reach $1300 or more this way, send the pig along with its last ham (totalling $700), and you'll hit the $2000 goal. I was pretty amused when I figured out the trick, after trying many, many times with chickens and egg products!