Meaning of the word "a dog is man's best friend" in English

What does "a dog is man's best friend" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

a dog is man's best friend

US /ə dɔɡ ɪz mænz bɛst frɛnd/
UK /ə dɒɡ ɪz mænz bɛst frɛnd/
"a dog is man's best friend" picture

Idiom

a common proverb used to describe the faithful and loyal nature of dogs towards humans

Example:
My grandfather always said that a dog is man's best friend because his retriever never left his side.
The way that puppy comforted the crying child proves that a dog is man's best friend.