Changelings and critters

[Lady Birb]

Changelings should be able to take DNA from the bodies of dead critters, and then shapeshift into that critter at will. Sure, it would mostly be used as a way to escape after being detected by turning into a mouse or cockroach and hiding in maintenance, but hey maybe a telesci nerd will turn into a windego king or ice spider queen and murder the entire station.

Also if a wizard polymorphs a changeling than the ling should be able to change back whenever they want.