The dog is barking.

狗在叫。

youdao

The dog is barking loud and chasing a cat.

这只狗狗大叫着追赶一只猫。

youdao

Not the dog barks, you can say the dog is barking.

不是狗叫，你可以说狗在叫。

youdao

Aquabot was easy to take in and out of the pool, and the dog, which is prone to barking at the human cleaner, treated the mechanical version with blessed indifference.

FORBES: Magazine Article

As she, ahem, warms to the subject, Ms Solowij, explains how her dog, barking in the background, is occupying the only tiny patch of sunlight it can find in her house.

BBC: Call that a summer?

When a bark is detected, the lowest level of correction is given, and corrections will rise until the dog stops nuisance barking.

ENGADGET: Garmin announces new dog collars, talks up 'Bark Odometer'