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Your 5-Month Old Puppy (Doodle At 20-24 Weeks)

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Your 5-month old puppy is changing nearly every day. Learn about the major and minor milestones your Dood will hit this month. And, see how he’s changing – right before your very eyes!


Your puppy’s adult teeth should be all in by the end of this month! You know what that means – the biting [should be] coming to a highly anticipated finale. But, hey, you’re not quite there yet…

Your 20-week old puppy may still chew and bite for a little longer, so be sure to continue offering some frozen Kongs or meaty-flavored chew toys to spare your hands and ankles.

Here’s a big thing to keep in mind: If you haven’t done it yet, talk with your vet soon about getting your puppy spayed/neutered. Vets usually like to have this done by six months of age.

Until then, it might interest you to learn what to expect this month with your puppy, both developmentally and as a Doodle puppy parent.

20-24 Week Old Puppy Growth: Physical And Behavioral Development

Just as he was last month, your puppy is still growing and changing rapidly. Here’s how your Dood is changing as a 20-week old puppy.

5-Month Old Puppy Physical Development

  • The heaviest chewing period for most puppies is 20-21 weeks, then after that, it should really start to subside. All of your Doodle’s adult teeth should be in by the end of this month (meaning less biting and chewing)!
  • Their adult coat may also start to emerge this month; brush him every day to avoid matting as he starts to shed his puppy coat.
  • Believe it or not, your puppy will reach sexual maturity between now and the next couple of months. Consider having them spayed or neutered by 6 months if they’re a small Doodle (less than 50 lbs.) and between 9-15 months if they’re large (over 50 lbs.) after growth stops.
  • Depending on your Dood’s estimated final size, he may be ready to be spayed/neutered; talk to your vet to learn more.
  • Mini and medium Doodles will reach about half their adult weight this month.
  • A 5-month old puppy will continue to grow at an individual growth rate. Be sure to keep track of it with our Doodle Puppy Growth Tracker!
  • As he continues to get bigger, he will need more and more food; Make sure you’re feeding puppy food and the right amount of it.
  • By the end of this month, you can start taking advantage of his increasing stamina and take him on a twenty-minute walk each day.

5-Month Old Puppy Behavioral Development

  • Your Dood may become less dependent on you for a sense of security. He will likely start to wander further from your side, motivated by his increasing curiosity and confidence in the world around him.
  • He has so much energy right now., and he knows it – but doesn’t know how to deal with it. Help him to get plenty of exercise to help burn off that energy in a productive way and decrease incidences of naughtiness.
  • He will likely be fully house trained by the end of this month (though it is normal if he isn’t quite yet).
  • Your 20-24 week old Dood is now developing his style of play. You’ll likely observe him rehearsing his adult role with some humping, nips, growls, and generally rougher play style.

What To Expect As A Doodle Parent

  • Prepare to keep your puppy stimulated and engaged. For example, when outdoors, change direction frequently so that he has to keep coming to find you. Games and puzzles are also great for pups this age.
  • Always reward your puppy generously for “checking in” with you on walks. The foundations of a great recall are often built (or ruined) during this timeframe.
  • If you haven’t done so already, work to get him in for an introductory grooming session right away.
  • Continue leash and obedience training, especially in public where there are lots of exciting distractions.
  • Take your Doodle with you everywhere possible! This “pre-adolescent” period is very important in solidifying a strong bond to withstand the challenges of adolescence (which isn’t far off).
  • Expect tons of heart-melt moments with your Dood at this age.


  • Continue providing a lot of puppy-safe toys and be sure to keep “chewables” out of reach (i.e. shoes, houseplants, electrical cords, etc.)
  • Do an evaluation once a week on how much you’re feeding your puppy to see if the amount needs to be adjusted.
  • Continue to avoid giving him bones, antlers, hooves, hard nylon dog toys, or other hard chews – all of which can damage soft puppy teeth.
  • Brush your puppy every day to avoid matting as he starts to shed his puppy coat, and trim his nails weekly.
  • Never punish your Doodle, as it can damage his confidence and emotional psyche.

This month will continue to bring lots of swoon-worthy, picturesque moments along with a possible increase in rebellious behavior. All in all, your 5-month old puppy is continuing to grow tremendously fast and looks (and acts) more like an adult dog with each passing day. 

Find out more about what to expect with your puppy from next month.

More Helpful Resources For Doodle Puppy Parents

4 thoughts on “Your 5-Month Old Puppy (Doodle At 20-24 Weeks)

  1. Thank you for sending and please continue to do so, however Pebbles is no longer with us. She was brutally killed by my neighbors Newfoundland on May 14 during our walk home. I tried to protect her and was unable to do that. I will be getting another puppy on July 16 at 8 weeks. I was just telling my husband how I was wondering how she would have changed in the past month. She had only her baby teeth when she was killed. She loved her Bully rings and we never had a problem with biting or chewing. The new dog has the same sire and coloring but I couldn’t get a girl so will make room for a boy dog in our home and hearts. She will always be missed.

  2. Hello – I need some expert advice regarding my 5 month old mini golden doodle “Max”. He has started to show serious signs of aggression especially around family dogs who share his space and toys/show affection towards his owners. His brother lives next door and they play every day, but both have been starting to fight aggressively so we have had to stop their daily visits. I am wondering why this behaviour has just started and concerned that this will only get worse resulting in injuries. Do you think its hormonal and recommend that he get neutered earlier? Is this a male thing because my female golden doodle never showed any signs of aggression. Any feedback would be helpful.

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