The animals are:Centipedes, millipedes, Bark beetles, Click beetles, Wood borers, Termites, Carpenter Ants, Spiders, Snails etc.
You can find bugs in rotten wood.
Bacteria, various beetles and their larvae, cockroaches, centipedes, millipedes, etc.
It is a log that has become rotten.
grass
snake
Nutrients, a place to grow, and protection
the rotten log eating insect (named dixie normus)
wild mushrooms get nutrient from it
A rotten log would likely contain spiders, ants, maggots, roaches, reptiles, and snakes. If it is in the water, then also toads and depending on the size larger, more ferocious mud-dwelling reptiles.
for the most they can be but it all depends on the animal but most of the time rotten or moldy food is not good for animals
Rotten animals. Laugh out loud
but if you mean garbage e.g rotten apple the some animals can.