It's not problematic, its just plain wrong. Also, the phone number is right there on the flier so its not like the fliers owner can't be contacted after seeing

It's not problematic, its just plain wrong. Also, the phone number is right there on the flier so its not like the fliers owner can't be contacted after seeing a flier to see if the animal has been found and if the flier can be removed. Doing the right thing sometimes takes a bit of work.