Well I was going to attempt to respond with an intelligent answer, so I did a search on my iPhone: "do animals have sex with pregnant females in nature," but I died laughing when I clicked on the answers.com result. Thought I'd share it with you. If I'm the only one who found this funny, maybe it's because I'm drunk tonight. I personally found it hilarious, since these are serious questions from real people:
Q: If you have sex with a dog, can you get pregnant?
A: No, you cannot get pregnant from a dog nor can you get a dog pregnant. Please get off the computer it is dangerous to you.Q: Can your girlfriend get pregnant if a dog had sex with her?
A: No. Though it should be noted that such relationships are illegal in many places and present several health risks.Q: Can you have sex with pregnant dog?
A: Can you? Yes. Should you? No.Q: Can you get pregnant if you have sex with a hot-dog?
A: Being the most superior human specie on the planet, why are you asking veto nary category question? If dog is bothering you, avoid them.Q: When a dog has sex, does it get pregnant?
A: It depends if they are spayed. This usually implies the bitch (female), as it is believed that even if a male is neutered, its sperm can be active for a while.