Maybe Don't Take Me Down To The River? Please Don't Put Me In The Water?

Barley, a dog, is unwilling to proceed any further along the rocky banks of a very shallow river.

Barley is not a fan of watersports. She can swim passably well, but the only bodies of water she’s entirely comfortable with are perfectly still ponds whose shore has a very shallow grade, ideally one she can comfortably stand in about thigh deep and no deeper, letting her splash about and cool off without actually having to swim. When the terrain is a little more uneven and the water is visibly moving, she’s not interested. More than that, she is visibly distressed at the sight of her companions going further in. I don’t think the call of the open ocean is being broadcast on her frequency.