Do they do this where you live? I find it so... looking for the right word... disrespectful? demeaning? disgusting?
I get that it makes them more visible for whoever picks them up, but couldn't they pin the location on a gps, or stick a marker in the ground, or anything other than painting a fluorescent orange stripe on them?
It's mostly wildlife like deer, skunks, raccoons, etc., but I have also seen at least one cat sprayed. At the very least, they should not do it to someone's pet!