Fergus?

I don't know what that is yet, but momma said we are getting it.  Is it a plant?  Kinda like a fungus?  We have those that pop up in our backyard and momma picks them before we try and eat them.  Fergus.  I don't get it.  She keeps training me to leave Fergus, but I don't know what that could be?  Anybody else got any ideas?  Fergus.  Hmm.  Nuttin.  Fergus.  Fuuuurguess.  Fur..  Guess?  Fur.  Whut?  Furguess.  Fergus.  Does it have fur?  Lol.  I still don't get it yet.  Whatever it is, it's coming tomorrow!  Keep an eye out for my answer once I figure it out!  : )..  Wish us luck!  Lol.  Fergus.  Nope.  Still nuttin.