Meaning: This sentence is describing a large dog making noise.
Choice of Words: Big is a common word used to describe something large or of greater size. Dog is a common household pet. Bark is the sound a dog makes.
Alternative Expressions
The large canine vocalizes.
Meaning: This sentence also tells us that a specific large dog is making a sound, but it uses more formal language.
Choice of Words: The word "large" is a synonym for "big", and the word "canine" means "dog". "Vocalizes" means "makes a sound".
The massive pooch emits a cacophony of yips.
Meaning: This sentence humorously describes a specific large dog making a lot of high-pitched barking sounds.
Choice of Words: The word "massive" is a synonym for "big" and "large", and the word "pooch" is a slang term for "dog". "Emits" means "produces", and "cacophony" means "a harsh or discordant sound". "Yips" is a specific type of bark that is high-pitched and sharp.