hello 4theluvoflabs,
your dog is stressed, overstrained and excited when meeting other people and dogs. It has nothing to do with happiness. Your lab does not know what to do and shows with his behavioural signs that he needs help from the humans side.
I like to link something here and give you an imagenation in addition to the idea "dogs are playing"
Think of two totally different wolf packs: wolf pack A and wolf pack B
one wolf from pride A is on his way to "play" with a wolf from pride B...
what do you think pack B is going to do with wolf A entering their territory??? Playing? Guess what: they will kill the concurrent.
And even in the district they are not playing but avoiding each other.
Our imagination of dogs are playing is absolutely antropomorphized and means to compare a brain orientated individual (human) with an instinct orientated individual (dog/wolf). It doesn't fit together.
The link is written for puppies but you can use it exactly for adult dogs, too.
Dogs are addicted to the human beings not to other dogs and as long as you decide when your dog gets its food and where and at what time to go, then normally you should take the responsibility to protect him from forced contact to other dogs. And think of what you
really see when dogs are "playing"?
Always remember: the play groups are not similar to a familar pack situation, what you have in the park is a lot of foreign dogs which have no relationship to another.
dog-language.com Blog Archive Organised puppy groups verses Puppy play groups
Take care of your dog you love
Conny