That thing will be so nasty in a month's time, nobody will want to go near it. How do you keep it from soaking rainwater, mud, body fluids, bird doodoo, etc?
Animals will take the wool and the stuffing for their nests. It will fade. It will smell. Park visitors will complain and they will have to take it down.

We've all seen stuffed animals and clothes left outside. It will be the biggest pile of ick in no time at all.