For those wondering if it’s true that pigs can’t see the sky:

There's a fair bit of debate on the subject of a pigs ability to look upwards, but here's the gist!

Pigs are able to look up a bit and therefore can see portions of the sky, but as a result of their neck's anatomy they aren't able to look directly above them.

Pigs have short, muscular necks with limited mobility that prevents them from tilting all the way up. There are plenty of other ways for pigs to see the stars, such as rolling over on their backs, taking a few steps back from what they want to see and tilting the rest of their body in line with what they're looking at.

Source

I still thought the sentiment in the post was nice and sweet though.