Generally not, you might get a bit of an upset stomach if you ate it, and I'm sure it might hurt if you put it in your eye or that sort of thing, but generally no, it is just food that has been eaten by bacteria and pooped out.
Yes. It is definitely harmful. But if the dog has bitten the cat for more than ten days, there is no problem of rabies to the cat. You please get the cat immunized.
This is not harmful to your dog but your dog does not need it so is a waste to give it to him or her. All animals with the exception of the Rhesus Monkey, Guinea Pigs & Humans, manufacture their own Vitamin C. It can be a bit harsh on the tummy but as I said before no need to give that to your dog.
dog,cat,
Only if said dog or cat has turned them on. In most peoples case No.
they can hear, see and smell better than humans
Probably a dog,or cat.
Not attracting hungry animals or birds is a reason for not including old fish and meat in composting heaps. Not introducing harmful bacteria and viruses and synthetic litters is a reason for not integrating old cat and dog waste into composting piles.
because they attack cat or bite people
To remove waste matter from its body similar to humans
Actually, dogs and humans share very few of the same microbes, so a lick or "kiss" from a dog is not really that harmful (unless the human is allergic to dog dander or dog saliva). There is some evidence that dog saliva actually has mild antibiotic properties, as well.
Yes, it can be harmful for a dog to drink its own urine as it may contain toxins and waste products that can be harmful if ingested. It is important to monitor your dog's behavior and provide them with clean water to prevent them from drinking their urine.
Cat is to dog as snake is to large birds, wild boars, mongooses, raccoons, foxes, coyotes, other snakes and humans.