Sadly, no. Animals can be force fully taken from their habitats or killed.
In a technical sense, almost all animals are parasitic. but to answer your question there are more free willing animals then parasitic animals.
Nekton are free-swimming animals that can move throughout the water column.
An organization with people trying to find animals homes.
There are several websites that offer free streaming of movies. "Animals are Beautiful" is available on Project Free TV the website.
Raised germ free
no
yes
No.
you get animals and feed them.....
HorseIsle, or Howrse
free and unstopable but it can also be dangerous for the small animals that live there
No. Animals would get hurt or taken if so.