Managing your puppy around a female puppy in season

At around
six months of age your puppy will be turning from a juvenile
into an adolescent. This can bring about changes in body shape
as growth slows down and the body starts to fill out. Long
legged gangly puppies will adopt more elegant adult proportions
over the next six months.
Bad Behaviour
This is also the time that male puppies start to think about
the opposite sex, albeit in a somewhat confused way. For some
dogs, cushions, furnishings and even their owner's legs can
provide an outlet for their frustrations and mounting behaviour
is common at this age. While annoying and embarrassing, this
behaviour will normally settle down again after a couple of
months but some dogs will continue to mount objects after this
time. Neutering your male dog is a good solution in the vast
majority of cases. This routine operation involves removal of
the testicles - the main source of the hormones that cause
these behaviours.
Changing Habits
The other change you might notice as your male dog grows up
is that he will start lifting his leg to urinate. This is quite
normal but a small number of dogs may also start to mark their
territory by lifting their leg and urinating on objects in the
home. Aggression towards other male dogs may also occur during
these 'teenage' years. Again, the vast majority of these types
of problems are solved by neutering and many owners choose to
have their male dogs neutered at around six months before any
of these potential behaviours can be demonstrated.
Being Defensive
Some young male dogs may start to act to defend things that
they feel are their own - this may be your home and garden, a
treasured toy, or even the members of your family. While it is
comforting to know that your dog wants to defend your home and
family, such protective behaviour can cause problems if your
dog also starts to react aggressively. If your dog growls when
approached while eating or playing with a toy, these should be
taken as warning signs that the territorial instinct has become
too well developed. There are a number of behavioural
techniques that can be used to help these dogs and your vet can
provide advice or may suggest a referral to a pet behaviourist.
Territorial aggression is also sometimes helped by
neutering.
True Love
There is one other type of behaviour that you might notice
that will only be demonstrated from time to time. If a female
dog is 'in season' in the local area you may find that your
male dog goes off his food, becomes sad and listless; or
restless and anxious to roam. It is not uncommon for male dogs
to make active attempts to escape to find the target of their
devotion. This can result in dogs becoming involved in
accidents or getting lost. Extra vigilance and a little
pampering will help him through this troubled time. Of course,
like teenagers, some male puppies are more difficult than
others but thankfully most will scrape through adolescence with
everyone's sanity more or less intact.