I have some non-human models that I would like to pose. I would like to do this with the ease that the 3D models can be posed. When posing human models, I can use "Lock Joint" to keep one joint from moving. I do not see this option for non-human models. I would also like to control joints the way I can do with standard bones.

I have used Blender so far to manage my models, but the model won't behave the same way after importing as it does in Blender.

Question 1: Can I lock the joints of non-human 3D objects?
Question 2: Can I make non-human models with the same level of control as the human models?