Mr Jones, our 4yo Black Lab, is a real pain at the park when other dogs are about and he has a ball.
Penny, our 8month Yellow Lab is a picture of sweetness and joy. She will always come when called, fetches well and is nice and sociable.
Jonesy will not come when called, steals other dogs balls (he can fit 2 balls in his mouth - insert joke here) and generally does what he wants.
When he was a pup there were dominant behaviors we either didn't recognise or fix and are now paying the price.
Problem is, in the park we cannot focus his attention, especially when other dogs are around. What are, dare I say it, stimulation collars like? A mate of mine swears by them. His answer to most things is generally 'more power' or 'more aggression' so I take his comments lightly.
Any other suggestions are welcome too.