I’ve got a 12 month collie, she didn’t take to fishing too well, she didn’t like being hemmed in a swim (they were “dugout” type swims at the bottom of a steep bank with a footpath running along the top) and got quite anxious - she’s a nervous dog anyway, she didn’t like other dogs walking along the path and staring down at her, I called the wife to come pick her up so she didn’t feel too stressed. She’s far better on the beach.