When does a Cockapoo stop growing?

when does a cockapoo stop growing
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    As with most of the big questions in life there is not a definitive answer as to when a Cockapoo will be fully grown. This is because the smaller the dog, the less development is needed to reach the optimum size and, as there are four Cockapoo sizes: Standard Cockapoo, Miniature Cockapoo and Toy & Teacup Cockapoos, there are, in theory, four different answers to this question.

    “When does a Cockapoo stop growing?” is a question a lot of owners ask as they watch their tiny puppy start to fill out and gain in height. You can relax knowing that your Cockapoo puppy will be almost fully grown at 9mths, although your Cockapoo will continue to grow until they reach approx 12mths.

    This is a bit of a generalisation however, as the age that your Cockapoo puppy reaches its full size will depend on which particular “make” of Cockapoo puppy you have welcomed into your family.

    In reality, the Standard or Maxi Cockapoo will take the longest to reach full size at around 12 months and the Toy and Teacup Cockapoos will generally reach their full size between 6-9 months.

    But remember that every Cockapoo, whatever their size, is a mixed breed and, just like children, each dog will grow at a slightly different pace. However, you can rest assured that by the time your dog is a year old they will be a full grown Cockapoo.

    How big will my Cockapoo get?

    “So when my Cockapoo puppy is fully grown how big will he (or she!) be?” is the next obvious question. As with humans it all depends on the parents – and, of course, the breed of your Cockapoo puppy´s parents will define how big or small your new friend will be.

    Cockapoos are a “mixed breed” and are classified by their adult size so:-

    Height (at shoulder)Weight
    Standard/Maxi Cockapoo15-18 inches20lbs
    Miniature Cockapoo11-14 inches13-18lbs
    Toy Cockapoo9-10 inchesUp to 12lbs
    Teacup Cockapooless than 10 inchesless than 6lbs

    Remember that weight and height can vary even between littermates but when choosing your puppy this is a good guide to how big your new friend will be when he or she is a fully grown Cockapoo. You need to see your new puppy’s parents to discover what size your puppy will eventually be. Which leads us on to:-

    Cockapoo sizes

    “What are the different sizes of Cockapoo called?” Different sizes of Cockapoo have different names and the size of your Cockapoo will depend on the size of the poodle that was the father or mother (because, of course, one parent is always an American or English Cocker Spaniel).

    However, even Spaniels can be larger or smaller than average for their breed so it is always essential to see both parents before choosing your puppy.

    As we´ve seen above there are four classifications of Cockapoo:-

    • Standard Cockapoo – These are the easiest to classify as the Poodle half of their parentage will be the largest Poodle breed, the Standard Poodle
    • Miniature Cockapoo – As the name suggests the Poodle part of the parentage here will be a Miniature Poodle
    • Toy Cockapoo– Life gets slightly more complicated when one of the parents is a Toy Poodle. If the mother or father is of average or slightly above average size for their breed your puppy will probably* be a Toy Cockapoo
    • Teacup Cockapoo – Your puppy´s parents will still be a Cocker Spaniel and a Toy Poodle but if at least one of the pair is a little smaller than average, your puppy will probably* be a Teacup Cockapoo.

    *Note the word *probably. To predict whether your new best friend will be a Toy Cockapoo or a Teacup Cockapoo you will need to see both parents, ask about previous litters etc. There are no guarantees but all Cockapoos are adorable, regardless of size.

    How fast does a Cockapoo grow?

    If you ask “How fast will my Cockapoo puppy grow?” the answer is probably “Faster than you´d think!” Just like human children, Cockapoos go through different stages of development.

    Just as humans go from baby to toddler etc so your puppy goes through different stages too – just a lot quicker than you, their owner, did when you were young.

    Birth – 2 Weeks

    When born, a Cockapoo puppy will generally weigh less than a pound – usually around 10 ounces. They grow quickly, however, and reach 1 pound within the first couple of weeks. Miniature, Toy and Teacup Cockapoos, of course, will be a little smaller.

    At this stage they will be totally dependent on their mother for milk and will start to gain weight rapidly.

    3 Weeks – 12 Weeks

    Between 3 weeks and 3 months of age your puppy really starts to grow apace. By the time he or she is 12 weeks old he (or she!) will have been weaned off their mother´s milk and be eating puppy food.

    Depending on whether your dog is a Teacup Cockapoo, a Toy Cockapoo or a Standard Cockapoo he or she will now weigh in at between 5 and 10 pounds.

    4 months – 6 months

    Between 4 and 6 months old the hectic pace slows a little and your puppy gains weight and height a little slower than during that hectic secondary phase of development. A standard Cockapoo might reach 15 pounds in weight by the end of this period with the smaller Cockapoos being correspondingly lighter.

    7 Months – 9 Months

    At the end of this period Toy and Teacup Cockapoo puppies are approaching their full grown size while Standard Cockapoos and Miniature Cockapoos will still be growing.

    10 Months – 12 Months

    By this time your puppy will have reached full size and that time will have flown by. Now you need to give your Cockapoo exercise and the right amount and type of food to keep them that size.

    Do Cockapoos have growth spurts?

    People often ask “Do Cockapoo puppies put on weight at a steady rate or do they have growth spurts?” and the answer is that there is a huge growth spurt that happens between the ages of 3 weeks and 12 weeks for all Cockapoo puppies – whether Standard Cockapoos, Miniature Cockapoos or the two smallest types, the Toy and Teacup.

    If you have a Standard Cockapoo you can expect a second final growth spurt to happen between 9 and 12 months.

    What age do Cockapoos calm down?

    Cockapoos are famed for the joy they get from life. “Enthusiastic” is the most often used description and owners sometimes wonder when their Cockapoo will start to become a little more laid back.

    We asked a friend with a 6 year old Miniature Cockapoo this question and this is what he told us.

    We were told by lots of people that our excitable Miniature Cockapoo, Lulu, would calm down a lot once she’d been spayed (she didn’t). Then we were told, by our Vet, that most Cockapoos calm down once they get to around 2 years old. Lulu had her second birthday – if she had calmed down at all we certainly didn’t notice. I think the mad passion for life that Cockapoos have comes from the Poodle side of their inheritance.

    We had a Cocker Spaniel some years ago that was so laid back she was horizontal – a friend has a Poodle that is positively manic. Despite the fact that our Cockapoo greets everything with unbounded joy we wouldn’t have her any other way. Like most Cockapoo owners we love our Cockapoo just the way she is. Joy is infectious!”

    Andy Harding


    Can I tell how big my full grown puppy will be by the size of his paws?

    The short answer to this is “not really”. Puppies of all breeds often have what seem to be large paws for their overall size. As with human babies, parts of a puppy’s body grow at different rates so your puppy may well “grow into” his paws

    What is the best way to tell how big my Cockapoo puppy will be when she is an adult?

    There are several factors to consider when trying to work out how big your adult Cockapoo will be:-

    1. The size of your puppy´s mother
    2. The size of your puppy´s father
    3. The size of adult dogs from previous litters from the same parents
    4. The weight of your puppy at 6 weeks (interesting but not as good a guide as 1 and 2 and especially 3)

    How to predict your Cockapoo puppy’s adult weight

    For Toy and Teacup Cockapoos just take their weight at six weeks, double it, and then double it again.

    For example, if your puppy weighs 1lb puppy at six weeks old it will, in theory, weigh around 4lb as an adult.

    For Standard and Miniature Cockapoos it is slightly more complicated. You need to take your puppies weight at 14 weeks and multiply that by 2.5.

    *Please note that these are predicted figures. Remember that the best guide to your puppy´s adult size is to look at the size of his or her parents and the size of any adults from previous litters from the same mother and father.

    How often should I feed my Cockapoo puppy to ensure they grow healthily?

    Your Cockapoo puppy will complete the fastest part of his or her growth before you take your new friend home, and this is the time when he or she gets all the good stuff (antibodies to guard against diseases etc) from his mother’s milk. This, of course, is “on demand”.

    From then on, growth is more gradual and steady but as your puppy gets bigger and heavier the more calories he or she needs per day.

    From the moment you take your pup home until he or she is four months old, you should go with four meals a day.

    Then, reduce to three meals daily until your puppy is six months old.

    Once your Cockapoo pup is older than six months, you could even opt for only two meals a day.


    That age old question – “does size matter’? Well when it comes to Cockpaoos, if you are looking to “go large” then you probably want to choose a puppy whose heritage comes from a Standard Poodle breed, whereas Teacup Cockapoos are incredibly cute but less common.

    Owning a Cavapoo ourselves, we have seen some Cockapoos that tower above Rosie, whilst others can safely bark their hello at face to face height. It really does depend on the individual dog, just as much as it does the Cockapoo breed and parentage.

    To find out more about the difference between Cockapoos and Cavapoos, check out our informative guide.

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