Where does the phrase the 'Dog Days of Summer’ come from?

Dog Days of Summer Idiom Meaning

What are the "Dog Days of Summer?"

The meaning behind the 'Dog Days of Summer'

Dog days Meaning

Why it's called the dog days of summer

Here's where the term 'dog days of summer' comes from

What (And When) Are The Dog Days Of Summer? | The Curiosity Desk

'The dog days of summer:' There's more to the phrase

Dog Days | Meaning and Usage | English Idioms

Why is the Hottest Part of the Summer Called the Dog Days?

Florence + The Machine - Dog Days Are Over (2010 Version) (Official Music Video)

ORIGIN of DOGDAY... (Cartoon Animation)

What exactly are the 'dog days' of summer and where did the term originate?

Written in the stars: the dog days of summer

Florence + The Machine - Dog Days Are Over (Official Lyric Video)

Idiomatic Expression: Dog Days of Summer

The Dog Days of Summer

犬の日はトラウマになりました😱😱 - Poppy Playtime 3

Weather catchphrases & Dog Days of Summer | Science Says