I recently got two new degus from the pet store and they were fairly young. So for a while they were skittish since i had taken them away from their mother and they were settling into a new home. Eventually they became more and more comfortable and would no longer scurry away and hide whenever i entered the room. They even started eating out of my hand TOGETHER but now, they are starting to get aggressive towards eachother whenever i put my hand in the cage to offer them treats. Im not sure if its only the one degu that isn't letting the other near my hand or both but, im just wondering if now that they've gotten a little older and are comfortable in their new home, are they trying to prove their dominance? I just need to know if this is normal behaviour. They are both males.