>> What do you have against dog food?
>>
>> Dogs need to eat just like people need to eat.
>>
>
> HTSI
>
> "It's a dog eat dog world."
"It's a doggy dog world."
--
Do not use _literally_ to intensify a metaphorical exaggeration.
People in a famine relief camp may be _literally_ starving, but
it is not a thing to say about oneself towards lunchtime.
(Gowers, _The Complete Plain Words_)