Yes it is called littering
It depends on the laws where you live.
yes
Only in California. Then they get to tax the owner for it.
No, it is not against the law to play ball with your dog on grass as long as there are no specific rules or regulations prohibiting it. However, it is important to clean up after your dog to maintain the cleanliness of the area and respect other people using the space.
If it is your own dog there is likely no reason you should not pick up the dog. If it is a strangers dog it is not a good idea. Some dogs do not like to be picked up and will bite if you try to pick them up. This is more likely to happen if it is a dog that doesn't know you.
yes, if your dog has fleas
you can try training him to pick it up
it means you should not pick him up
Yes. A dog eating any type of feces can cause the dog to "pick up" a parasite(s)
No, a falcon cannot pick up a dog. Falcons are not strong enough to lift animals as large as dogs.
No, an owl cannot pick up a dog. Owls are not strong enough to carry animals as large as dogs.
Step on the white stuff near the dog