Yes, all animals sense surroundings and any other details
that's how all animals feel things around them.
I have no doubt they do. All animals have nerves and the main function of nerves is to sense or feel things in their environment.
actually only the dog does
Compared to other animals, our sense of smell is poor. A lot of animals can smell things from miles away! :)
They say all animals can.
Almost all animals are good at sensing things like that but I would say a dog.
The study of all living things-plants and animals is Biology
To see if prey is near them or sense things around them.
in a sense, yes
no but they have a great sense of smell
Yes
In a technical sense, almost all animals are parasitic. but to answer your question there are more free willing animals then parasitic animals.