The real time results that show up under the Google search box can be very helpful to most searches. Google displays these results based on popular searches others do on Google. It can be very helpful to site owners, as often times a URL is displayed near the top and brings the searcher if clicked directly to the site. It can help those who have a hard time spelling etc. Sometimes, the auto complete results are just plain funny and makes you wonder who searches for something like this!

I mean really, who searches for something like that? Can I get pregnant from a dog! Come on now, that is sick and crazy! I have a feeling some people have figured out a way to get a phrase displayed in these results, but that is just a guess.
Clearly I had a little fun with the image as well with what was provided! Sometimes automation doesn’t work out the way you intended!
There is even a site dedicated to some of the funny Google auto complete phrases that turn up, via AutoCompleteMe.com

Seyi
Yeah.. is sounds fun, but I won’t be surprised if the keywords “getting pregnant with a dog” is actually generated by users who perhaps have been truly having sex with dogs. Don’t rule out what human beings can experiment with animals. It is a known fact that there are porns where such things happens.