Lost Large Light Brown Dog in Lockhart, TX

My male dog is light brown colors and he's very friendly he's only 11 months old but he's a large dog over 100 lbs. He got out of my fenced in yard and was last seen chasing a garbage truck on hwy 713 and Cattlemens Row Lockhart TX. On 8/30/24 around 10 am this morning. He was with my female border Collie when they got out but she came back home alone and he hasn't been seen since.