That's a mean dog.

那是一只恶狗。

youdao

Her grandfather hated Kelso, thought him a mean dog.

她祖父讨厌凯尔索，认为他是个无赖。

youdao

You have to save poor poodle ladies that are held captive by mean dog catchers.

你必须挽救被卑鄙的对狗怀有敌意的人偷走和抓住的可怜的雌性狮子狗。

youdao

But I thinkit was her grandma's dog. He was a mean dog.

VOA: standard.other

To look at the dog, you would think he was not worth anything but to sit around and look mean and look for a chance to steal something.

VOA: special.2009.08.29

"That doesn't mean the dog is happy, that means the dog is excited!"

CNN: 'Dog Whisperer' Cesar Millan on adopting the right dog

The state high court ruled that just because a drug-sniffing dog received training and a certificate of graduation does not mean that the dog should be deemed capable of detecting by smell whether an automobile, container, suitcase or other receptacle is hiding illegal drugs.

FORBES: Man's Best Friend Is No Friend to the Fourth Amendment

That would mean that the dog would be whining and turning in circles.

NEWYORKER: Indianapolis (Highway 74)