Oreo's Diary - Dog Behavior - Size matters

But not always. Age may matter more. All puppies want to play, so two five-month olds are bound to get along. But bigger puppies can be clumsy relatively speaking and so the play doesn't always go so well. But dogs matched by size, if they get along, will run and run and run.
Our best experiences have been with small to mid-size dogs who are between 1 and 3 yrs. old. They seem to be able to connect to their "inner puppy" but also don't get too rough.
One thing though, you just can't predict by age, breed or size whether another dog is going to get along with yours. Every dog is different. Some actively dislike puppies and will growl and snap. Others just walk away. Some are patiently tolerant. Yet others enthusiastic. The best indicator of an approaching playmate will be a relaxed wagging tail, swish swish swish in big lazy arcs likely means, oh I like the looks of this puppy!.