In our home we have two identical “moo cows”. They both have equally had their stuffing ripped out of them, and have equally bit and chewed. It matters not, because this always happens.
They fight over every thing, but the “moo cow” thing is the most funny/frustrating (depending on how I’m feeling.) Even if I hand them each one toy, they both want whatever one the other one has. Oh my doggy children.