Why only humans can be ethical?

Explanation:

Only Human Beings Can Act Morally. Another reason for giving stronger preference to the interests of human beings is that only human beings can act morally. This is considered to be important because beings that can act morally are required to sacrifice their interests for the sake of others.

only human being can act morally, this is considered impprtant because beings that act morally are required to sacrifice their interest for the sake of others.

a pirate walks into a bar with a steering wheel sticking out of his pants.

bartender: isn't that uncomfortable?

pirate: arrgh! it's drivin' me nuts!

you have to tell us what you're talking about or it's impossible to answer.