My co worker found this in her yard the other day. None of us know what it is. Some say it could be a praying mantis egg sack??

It is!

Very nice! You're lucky to have it. They do so much good!

Yes, and they almost have personalities. We don't get to see them here in western Washington often. That is an amazing find. Congratulations.

I think they do have personalities, Laurie. They are very cute to interact with. Of course that probably is anthropomorphism!

I wish we had them in the UK!

That's a shame you don't have them, Sue. Just for fun I checked and there is a company that sells them for pets! You could probably have an indoor friend! I think they aren't selling right now. Probably only in Spring.
http://www.exotic-pets.co.uk/p...

My egg cases usually don't open until June 8 to the 10 each year. The small babies are white and tend to eat each other. Yet every year I always find another egg case when I'm cleaning up in the fall.