Meaning of the word "what can you expect from a hog but a grunt" in English

What does "what can you expect from a hog but a grunt" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

what can you expect from a hog but a grunt

US /wʌt kæn ju ɪkˈspɛkt frʌm ə hɔɡ bʌt ə ɡrʌnt/
UK /wɒt kæn ju ɪkˈspɛkt frəm ə hɒɡ bʌt ə ɡrʌnt/
"what can you expect from a hog but a grunt" picture

Idiom

used to say that you should not be surprised when a rude or unpleasant person behaves in a rude or unpleasant way

Example:
He insulted me again, but what can you expect from a hog but a grunt?
I knew he wouldn't thank us; what can you expect from a hog but a grunt?