Uh oo a critter? European hare, various rodents, also European ground squirrels, all on the list for critters that will eat and pick a garden / greenhouse clean.
The image shows a large, round bale of hay or straw.This type of bale is a common way to store harvested grasses, legumes, or other crops for animal feed or bedding.
I couldn’t get a good angle without shooting into the sun. You can see the highlights around its sides.