'eilítillvargr' is little wolf
And now here was her eldest, her all-powerful wolf-child. This one two wore human skin, but she thought she could see something canine in his eyes still.
"Just as I was talking about the fortune of the three of you being together," Angrboda said to him, "my eilítillvargr appears. Dressed like a man, I see, but you still smell wolf."