Many experts and organizations in a position to know (for
example, animal behaviorists, dog trainers, and rescue professionals),
discourage dog guardians from acquiring puppy littermates. In fact, many
shelters and breeders simply refuse to place siblings together.
The reason, according to certified professional dog trainer
Jeff Stallings, writing for The Bark:
“Anecdotal evidence suggests that behavioral issues may
arise during key development periods because the two puppies’ deep bond impedes
their individual ability to absorb and grasp the nuances of human and canine
communication.”
In other words, canine siblings can be so closely bonded on
a primal level, that if they go on to share the same home and family, that deep
connection can inhibit their ability to learn how to communicate with their
humans and interact with other dogs.
They wind up with a “muddled understanding of the world
around them,” according to Stallings, which can create fearfulness and other
undesirable coping behaviors.
The phenomenon is known as “littermate syndrome,” and it
doesn’t occur in every single pair of littermates who are raised in the same
home. However, it happens often enough that experts in canine behavior and the
human-canine bond advise against bringing home siblings.
Signs of Littermate Syndrome
Some of the signs of littermate syndrome include:
- Fear of strangers (people and dogs)
- Fear of unfamiliar stimuli
- High level of anxiety when separated even for a short time
- Failure to learn basic obedience commands
- Training two littermates is not just a matter of twice the
work, but also the level of difficulty resulting from the puppies constantly
distracting each other. According to Patricia McConnell, applied animal
behaviorist and author of several books on canine behavior:
“It’s just hard to get their attention. They are so busy
playing with each other … that you become the odd man out.
I suspect this indeed does have to do with social bonding
to some extent, but I have seen pups of a duo who clearly adored their humans.
Adored them. They just didn’t listen to them.
It seems harder to get their attention, harder to teach
them emotional control, and harder to teach them boundaries. I imagine that we
humans become more like party poopers that interfere in their fun with their
playmates, not to mention that we are more tiring, because they have to learn a
foreign language in order to communicate with us.”
Another Potential Problem Among Littermates: Fighting
Sometimes littermate syndrome can take the form of non-stop
fighting between the dogs.
Bullying and aggression between siblings seems to happen
more often than between unrelated dogs, and it can get nasty. Many
well-intentioned dog guardians have terrible tales to tell about the harm
caused to one sibling by the other.
Shelters have stories as well of pairs (or one of a pair)
being returned because the adoptive owner feared for the well-being of the
sibling being bullied.
Unhealthy Emotional Dependence
Nicole Wilde, canine behavior expert and author of “Don’t
Leave Me!” believes the separation anxiety between littermates is the result of
hyper-attachment, which is also what interferes with the puppies’ ability to be
properly socialized.
“People assume that having two same-age pups who play
together and interact constantly covers their dog-dog socialization needs,”
Wilde told Stallings, “but they in fact don’t learn how other [dogs] play and
have no idea about social skills with other puppies, adolescents or adult dogs.
“Perhaps one puppy is a bit of a bully, which his
littermate puts up with,” Wilde continued, “but his rude behavior might not be
tolerated by a new dog in a new setting.”
Many canine behavior experts feel it’s best to rehome one
of the siblings when a pair is showing early signs of littermate syndrome, so
that both puppies have the opportunity to grow separately into stable, balanced
adults.
Since this can be a difficult time for the original owners,
it’s often easier to have prospective new owners meet both puppies and decide
which one to take.
Uh Oh … I’ve Already Adopted a Pair of Littermates. Help!
It’s important to keep in mind that it isn’t a given that
every pair of puppy siblings will develop littermate syndrome. In fact, I’m
sure there are many people reading here right now who are in complete
disagreement with the advice of the experts I’ve cited.
With that said, according to Pat Miller writing for the
Whole Dog Journal, there are things you can do to prevent or mitigate
littermate syndrome if you’ve already brought sibling pups home with you.
The goal is to keep the puppies from developing a
counterproductive degree of emotional dependence on one another.
Two dogs, two crates:
Miller recommends crating your puppies separately at night.
The crates can be near each other initially, but one pup per crate helps each
dog learn to adjust to being alone. The next step is to gradually increase the
distance between the crates until the pups can no longer see each other.
Make sure the crates are in bedrooms at night so the pups
spend several hours in close contact with their human family members.
Two dogs, two training sessions:
Train your puppies separately so that you can count on
their undivided attention. Miller also suggests walking and socializing them
separately to avoid ending up with a leader and a follower who looks to the
leader – not you – for social cues, commands, and direction. This will help
both pups develop into confident, independent adult dogs.
Use training sessions to lavish attention and affection on
one puppy, while the other works on a treat-release toy in his crate in another
room. This will allow you to develop a bond with each puppy.
Two dogs, two play sessions:
Miller suggests separating the pups for play sessions at
least some of the time so that the less assertive of the two can come into her
own.
“For example, if you always play ‘fetch’ with the two
together,” says Miller, “you’re likely to see that one pup repeatedly gets the
toy and brings it back, while the other runs happily along behind. If you watch
closely, you may even see the more assertive one do a little body language
warning if the other tries to get the toy – a hard stare and stiffened body,
perhaps.
The less assertive one defers to her sibling by letting go
of the toy and looking away. That’s a fine and normal puppy interaction, but it
can suppress the ‘softer’ pup’s retrieving behavior.
Unless you make the effort to give her positive
reinforcement for fetching toys when you play with her alone, you might find it
difficult to get her to retrieve later on in her training.”
A Good Rule of Thumb for Most Dog Guardians: One Pup at a
Time
As I mentioned earlier, littermate syndrome isn’t a
foregone conclusion for every pair of puppy siblings. Genetics play a role, and
certainly the knowledge and commitment of the dogs’ owner to raise two
well-socialized, balanced individuals does as well.
However, the general advice given by professionals is:
don’t do it. Instead, adopt a puppy who is most likely to fit into your
lifestyle, and then focus on training and socializing your pup to insure she is
comfortable in her environment and when she encounters other dogs and people.
Only after your puppy has grown into a well-balanced adult
is it smart to think about adding a second canine companion to the family.
