Socialization
Can two dogs become too dependent on each other?
Last updated 23 September 2026 · How we write and check this
Short answer
Yes, this is sometimes called littermate syndrome informally, and it can happen between any two dogs raised or kept together constantly, not just actual littermates. Signs include distress when separated even briefly, reduced interest in bonding with people, and each dog looking to the other rather than developing independent confidence and training responses.
Why over bonding becomes a problem
Two dogs that are never separated can end up more attached to each other than to their humans, which makes individual training, vet visits, or any future situation requiring separation, such as illness or boarding, far more stressful for both.
Build in deliberate separate time
Daily individual walks, separate crates or rooms for part of the day, and one on one training sessions with each dog help both develop independence and a direct bond with you rather than relying entirely on each other for confidence.
Watch for specific warning signs
Panicked barking or destructive behavior when the dogs are briefly separated, refusal to eat or engage when apart, and one dog consistently looking to the other before responding to a cue are all signals worth addressing with more structured individual time.
Key takeaways
- Over bonding, sometimes called littermate syndrome, can affect any two dogs kept constantly together.
- It can undermine individual training and each dog's confidence with people.
- Daily separate time, walks, and training sessions help build independence.
- Panic during brief separation is a clear sign more individual time is needed.