What Breed am I???

This is Okie, he showed up at my mothers house one day and is about 6-8 months old. He looks just like a golden retriever with a brindle coat. He's a sweet boy, rambuncious and full of it, loves to pick on Axel, moms' 8 year old great pyranese/aussie mix. He did have a collar on but no tags and wasn't microchipped. They live WAYYYY out in the country and posted photos but no one ever claimed him. soooo he became Axels buddy since Molly (my old border collie) passed away 2 years ago.

Here's Okie:



And Axel the pyr aussie mix. He'll be 8 this year. He loves his water tub. Its a 5ft rubber maid livestock water tub. LOL (yes he's a big boy 110lbs)