Prev 1 of 15 Next View full size View slideshow View more information Golden Retrieve puppy sniffing - 3 weeks old Golden Retrieve puppy sniffing - 3 weeks old Our Golden Retriever puppies are now just over 3 weeks old. They are growing very quickly and we can see daily changes in their size and behaviour. They are starting to be adventurous and explore their immediate surroundings. Interestingly even though the door to their room is open they do not dare to leave it … yet. There is a lot of sniffing around, lots of paw showing, initial power plays and lots of squeaky barking. They are also starting to eat food other than mum’s milk, which means they will start growing even faster.