I would probably say dog. Because dogs help people when their blind and their man's best friend!
There are many animal products that are very useful to man. Five of the most useful are beeswax, leather, pearls, feathers, bone, and fur.
Typically in American English the statement would be "a cow is a useful animal" - the first sound in useful is close enough to a consonant that most individuals will use "a" rather than "an".
A useful young man
jbyntmy
YES....
biology is useful in every one
giraffes useful to mankind ?
yes
yaks
Variations in organisms can certainly be useful in plant and animal breeding. These variations lead to adaptions to the environment.
Animal Man was created in 1965.
It can harm or kill the animal and it harms the habitat and flow of nature