Game Of Thrones: 12 Easter Eggs You Probably Missed In Season 5
12. Cat Of The Canals
The show has a penchant for somewhat unnecessarily changing details from the books. You can understand it in some cases, such as narrative edits made for run-time or cutting away superfluous characters who would only distract, but other times it doesn't really add anything at all.
That much can be said of the decision to change Arya's first assumed identity from Cat Of The Canals to the less poetically named Lana. It just felt like a creative development that wasn't at all needed, nor particularly welcome.
But at least there was a nod back to the original character. When Arya narrated the routine of her new identity, at the precise point she said "now every morning, I make my way down to the canals", a cat crossed her path, very carefully framed on screen. So the cat of the canals at least still existed in some form.