Collars, on the other hand, are usually selected for one particular dog depending on their color, personality, gender, etc.
Maybe this is the difference between a multi dog household and one with an only dog.
I think you're right about that. Jeni and River wore different size stuff though.
When River died, collar and leash went in the ground with him. That leash was special. when I bought it, a trainer said that it was too stiff. Let me tell you, it was like a greasey rope by the time it was buried with him. Too many memories to use on anyone else. Also some favorite toys, a tracking flag, a coat, all of his ribbons from EX B classes.
I took the box with Murrey's ashes back east with me, they were then buried next to her son, Ch. Soquel's Double Trouble. A fuzzy stuffy snake went into the hole with the box of ashes. Anyone who ever met Murrey would understand why-she never went ANYWHERE without her stuffy snake.
She's the only dog who isn't here with us today, the rest of the dogs who've left us are in cedar boxes in "the heartbreak closet". I only buried her next to this son because I didn't want him to be by himself on a lonely hillside. His owner has built a nice little private pet cemetary, with a stone wall around it, spring bulbs planted around the headstones.
By the way, when that son of hers died, his owner sent me all of his coats (and he had an extensive coat wardrobe). They've been put to good use around here.