Trying to find an excellent blog I read in the past

A few years back I read a blog that did a really good job of explaining lifetimes. Like _really_ good: I already knew some Rust at the time, but still read the whole lengthy thing from start to finish uninterrupted. Now I’m trying to find it again to share with some friends who are just getting started. Problem is, I can’t find it!

I remember a few details:

- The site had a nice dark theme, with a dark grey or black background

- The post I read was designed to teach relative beginners about lifetimes and was pretty thorough

- I read it 3-5 years ago

- There was a cartoon owl, cow, or other animal that would ask questions via a speech bubble, which the author would respond to.

Searching for this has been pretty useless so I’m hoping for the best here. Does that description ring a bell for anyone?