poop color?
 

i took my dog to the vet recently and he said i need to bring him a stool sample my problem is that im never home and i have multiple dog so identification is an issue. i asked the vet and he said feed my dog a color crayon but he will not eat it, anyone have any suggestions ?

Do the dogs get walks?

If so, just walk the dog about 20 minutes or so after the dog has finished eating then collect the poop during a walk.

You could try feeding your some raw carrot if like it and see if worked . I feed carrot to my dog and I will some time see orange in his poop.