Yep, she is constantly hungry. I am going to feed her in the morning, and in the evening, and yes, she was the one who went missing. I didn't have any clue she was in heat! If I did, I would have made her come in, so I could prevent a litter. But if I knew, most of the signs, I would have let her in. cause you can tell she is pregnant, when she walks. Oh yes, heh, this was accidental too, but, my grandma, and grandpa's dog, she was a Golden Retriever, got loose, and went to their male dog, who was intact, and she had pups, and we didn't know she was pregnant because she was naturally skinny, and she didn't eat a whole lot, and had a lot of fur.. It never happened again. (Isis getting pregnant)