I've had this idea crawling in my head for some time. After many concept I got it down, finally. A special creature made using left over DNA from the Predalien and Newborn, along with human DNA and DNA of the deceased Spike from Alien3, with some Synthetic materials added to the mix. The result is an organism who's main function is to produce xenomorphs for science to test.

How it works is the Facehugger actually latches to this creature's nether region and implants the embryo through to the large belly where a womb is located. Unlike most regular facehuggers that can only produce 1 xenomorph with the help of the host, this creature multiplies the embryo by four, having four "bellybursters" implanted within. Because the creature is made using human DNA, the Xeno-Doggo's body releases the "human" compound to help give form to the Xenomorph embryo while not harming the host or breaking down the host's own compound. Unlike every chestbursters and bellybursters thats suppose to, well, "burst" out of the host after development, the bellybursters actually slithers down out the nether region where they were implanted, safely being released without harm since they can sense and smell their "Queen". It is not known to be male or female.