Chimæra
Bio: Chimæra are unique creatures. They are shapeshifters that can turn into any animal. They are from the planet Lorien and are like the dogs and cats there. They are doglike in nature with their loyalty to their owners. They also have one form that they are most comfortable in.
Typical abilities: They can shapeshift into any animal.
Danger level: Depends entirely on the animal they turn into.
Is there a xenomorph variant?: No. Shapeshifters like Chimæra are locked out of their ability to shapeshift when the facehugger attaches to them. The shapeshifting ability isn't transferred onto the xenomorph.
Recommended procedure for handling them: Chimæra aren't really anything to worry about. You won't have to fight one unless you anger it by attacking it or attacking its owner.