Another thing to keep in mind with MacBook Pro models or any other device that has fans... if you have cats, dogs or other heavily shedding animals, you must regularly (for me, once a year, for people with German Shedders more like once a quarter) open them up and thoroughly clean them.
The amount of fur that manages to squeeze everywhere is insane.
Husky/Pyr owner here - I have to systematically blow out all of my electronics because she molts enough fur to start my own Etsy brand of stuffed animals.
The WORST thing, though, is that all her fur makes its way into all my musical instruments, including underneath each individual key of my upright piano (now effectively a felt piano).