Here they are known as English labs, Shorter than the average lab with a more square head and the knot on top of the head.

He wasnt born in England, Us people here they are known to us because they are shorter than the average lab, Square head and the knot on the head too.

I'd suggest he's more of a working type then than show bred, which is generally what's meant by calling them *Engllish* Labs

I'd honestly say it's down to socialisation, training, and partly down to how he's bred, but nothing that is down to which continent he's born on.

But that can be excitement - not necessarily aggression...

My Lab goes beserk if he's on lead and sees another dog. Honestly, he looks like the most aggressive dog imaginable. But it's pure excitement and then frustration at not being able to get to play with the other dog. Off leash he's amazing with other dogs, so much so that he's becoming known as 'that gentle Lab' by owners of very young pups at the park.

If your dog is also reacting badly to other dogs coming into the home, then that's a territorial thing. A decent trainer should be able to help you with strategies for this.

What is he like when off leash at the dog park?

I'm getting confused The OP seems to say his Lab has shorter legs etc, isn't that more of a 'show' type?

I always thought a typical working Lab had longer legs....???

Please correct me if I'm wrong

I thought it was the other way round, the English Labs are the short, stocky type while the American Labs are the taller, leaner type.

My 11 month old Lab goes nuts when he sees other dogs. Barking, lunging, squealing, hurling himself around. Like Tabithas his is excitement and frustration at not being able to go right over there and introduce himself. Basically a doggy temper tantrum.

Is all this behaviour happening at home? What's he like when out for a walk and he sees another dog?

Not necessarily, some working dogs aren't long in the leg, it depends which lines

A lot of folks in the US import FT lines from the UK, because they are that much lighter built than the US Labradors.

I havent taken him off leash any where, Too affraid of what may happen

I walk him early in the morning to avoid other dogs, Hes great on the leash and has been trained to sit wait and heel, I guess Im going to have to prepare my self and start walking him in the evenings when other dogs are out.

And you've had him since a pup? You need to be able to find somewhere you can exercise him off lead, all mine are let off lead pretty much as soon as they're back with me, not just my dogs, but the ones I've run on, and the ones I've looked after.