She's telling you she's getting into stuff she's not supposed to and eating it, increasing her risk of a blockage and expensive surgery. Why do you think finding toys in her poop is related to her anal glands?
I dont know about brands in the USA but my border x can only handle a few foods with these ratios without having stomach issues:I have her on pure balance chicken and pea recipe its 5% fiber and I add anal gland powder to the food. Everything was going good then I start finding yarn in her poop tennis balls, chewed up kids toys anything you can think of I have found pieces of it in her poop what is she trying to tell me?
"High-fiber diets and the shorter digestive tracts of dogs often don't mix well, for this reason they should not have more than 1.6%-3.5% in their diets. High fiber levels in dogs can cause digestive problems and interfere with proper nutrient absorption. Unlike humans, dogs are carnivorous, meaning their nutritional needs are better satisfied with meat rather than with plant materials." Thats what my dog food says on the back above the list of its different types and is the dog food I started to use on the advice of my at the time work colleague that was a vet on agriculural animals, the border collies included. Again I do hope you get things sorted 🤞she never did this type of behavior until I switched her onto pure balance. Your answer was common sense that's why I'm seeking advice from adults