As an evolutionary entomologist, I can't pass up the opportunity to mention 'traumatic insemination'. Some bedbug males inseminate their mate by simply piercing the female's exoskeleton. This has led in some species to females having 'paragenitalia', a secondary opening in a new place to prevent guide the males and limit the damage.

Mike

Great stuff!

Also, another mostly lurking BBP (Big Brain Pelican)! Post more...please, please!!

Vasectomy can cause this...can also cause your kids to change color.

Cant possibly get weirder than this. Mammal with a duck beak, webbed feet, venomous spikes in its thighs, a beaver tail, and that lays eggs! When the first samples were taken back to England the discoverer was accused of having sewn together various annimals to make one up.

Hammer Head Sharks are pretty weird...

http://forums.pelicanparts.com/uploa...1579118478.jpg

Interesting

Kangaroo genitalia, queen bee mating, Quetzal plumage, and other evolutionary replication techniques.

Primates are certainly a contender. Besides the scientific reasons, there is this:

http://forums.pelicanparts.com/off-topic-discussions/1050021-jet-pack-fun.html#post10720537

I’m sure there’s some court out there that would jump at the chance to penalize the bone marrow donor with child support payments based on this too.

Think it can’t happen? It’s already happened to “anonymous” sperm donors. Never underestimate the misandrist bias in the family law system...

Be careful out there gentlemen!

Yea the platypus is pretty odd. I might a hard time believing such a mythical sort of creature actually existed if I hadn’t actually seen one in person!

Paddlefish

https://www.mdwfp.com/media/254201/paddlefish.jpg

Narwahl

https://d2chemrnatmkp3.cloudfront.ne...ty=90&jpg=true

Somewhat OT, but you've got to be careful with this. My mother worked with a lady. The couple had several kids and not a lot of money, so the husband got a vasectomy. I've not had one, but apparently, part of the process is that a short time after the procedure, the guy goes to the Dr office and provides a sample that the Drs then use to confirm that the procedure was successful. Apparently this guy was too macho or something to do the check. Then within a few months, his wife got pregnant. He then proceeded to treat her like sheisse and call her every name in the book because "I've had a vasectomy." Eventually, the guy was checked and it was determined that his vasectomy hadn't taken.

Then, on the other end of the scale, you can have parents that appear to be one color with children that appear to be another color.

I'm pretty sure that the Narwahl's spike is actually a tooth.

One of my friends had it done. And then went back to have his swimmers checked, and yep, still swimming. So he had it again. Went back for the check, and still swimming!

He explained to the doctor, if this one does not take the doc will never need to have one because he will castrate the doc (and then they all laughed)

The third one indeed was a success.