Ecologist Jokes

There's this white ecologist working with an African tribe, and one day the tribe elder comes to him and says, "My wife just had just a baby, and it's white. You're the only white man within hundreds of miles of here."
The ecologist gulps and says, "Well, some things in nature just can't be explained. Look at that herd of goats, for example. All of them are white except for that one black goat. This is probably like that."
Finally, the Tribe elder nods and says, "Well, all right, I'll keep quiet about my white baby, if you'll keep quiet about that black goat."

When is a pig an ecologist? When he recycles garbage into ham.