Dog name ideas?

[Rainbowstripes]

I've recently had a foster staying with me who is officially a foster fail and is now staying.
All my dogs get a new name when/if I take them on permanently, I know people have mixed opinions on this but for me it's a fresh start and often they've already learned to ignore their previous name.
He's a dark scruffy lurcher, only young but likely will end up being small collie sized.
I was thinking of calling him Oops or Oopsy (I'd literally just said I was having a break from fostering when I was asked to look after him 🙄) and was wondering if anyone had any other ideas (ideally along these lines).
Thanks! 🐾

Tricks, Mouse (best laid plans), Folly?

Fido.
It's a joke name for a dog, but I have never ever met a dog called it!
It means "trusty" or "faithful".

Lucky, Lurch, Phoenix,

Arthur
Benji
Larry
Merlin

Rafiki - the wise old baboon from The Lion King . Or ZaZu

I also think Martin for a scruffy lurcher is very apt.

If he was female I'd say miss short for mistake
Could Blunder work?
I have a cat called What eg What shall we call him

A few good ones here thank you! I love the cat called What 😂