Degus are active, social runners, and a large solid wheel is often the single prize every degu values in the enclosure. Because there is room for just one, every degu in the group knows exactly where the prize is, and the squabbles that follow are about access, not temperament. You cannot train the desire away; you manage the schedule, the surroundings, and the signals that one degu is starting to claim the wheel as private property.
Put the Wheel on a Timetable
Offer the wheel at set times, ideally when the group is naturally active, and supervise the first sessions so you learn the group's order: who runs first, who waits, and who gets chased off. Rotate who is nearby when the wheel goes in, and scatter a handful of forage at the far end of the enclosure at the same moment, so arriving at the wheel area is not the only rewarding choice in the room.
Between sessions, take the wheel out or block it consistently rather than removing it mid-squabble, which teaches the group that conflict makes the prize vanish and can raise the stakes next time. Keep sessions long enough that waiting degus get a genuine turn; a timetable that always cuts off the same low-ranking animal builds the very frustration you are trying to cool. Check the wheel itself weekly: a solid running surface of a size that lets a degu run with a level back, a quiet bearing, and no gaps where a tail or foot can catch.
Time sessions to the group's own rhythm by watching for a few days first: degus have busy stretches and sleep stretches, and a wheel offered into a sleep stretch earns little interest and teaches little about sharing.
Build Outlets Worth Choosing Instead
A wheel stops being worth fighting over when the enclosure offers real alternatives. Add a dig box filled deep enough to tunnel into, a dust bath offered regularly, branches and ledges at several heights for climbing, and cardboard or woven toys to shred. Move these outlets and refresh them on a rotation so novelty keeps pulling attention away from the wheel corner.
Spread food out as well: scatter part of the daily ration through hay or across ledges so the group forages in several places at once instead of gathering at one bowl and then one wheel. Water, hay, and the dust bath should never all sit in the wheel's corner, because a degu guarding that corner then controls everything that matters.
Read Guarding as Resource Stress
Watch for the pattern that matters: one degu sitting in or beside the wheel and blocking entry, chattering or boxing at groupmates who approach, chasing that continues after the other animal retreats, or nips that break skin. Occasional short disputes that end with both animals feeding calmly nearby are normal group life; repeated blocking by the same animal, wounds, fur loss, or a groupmate who stops approaching the wheel area at all means the setup is not working yet.
Respond by widening the system, not by punishing the guarder: lengthen wheel sessions, add another high-value outlet near the wheel corner, and give the group more floor space or a second level if you can. Any bite wound, limping, or a degu that stops eating needs a vet visit, and the animal may need rest apart while it heals. Recording who guards, when, and what else was available inside KinsLe through Care Teams turns scattered impressions into a pattern your household can adjust together, session by session.