Never done it before apart from a council flat umpteen years ago.
I get on rightmove and enquire about a place and all I get is an email saying it is no longer available. A small number of them state pet-friendly quite a few say no pets and the majority don't say either way. rightmove doesn't have a pets or children filter. Must I really enquire about everything that doesn't say about pets and then be prepared for most of them to say I can't bring my cat?
What's the typical lead time from deciding you want a place to moving in?
"Working" software has only unobserved bugs. (Parroty Error: Pieces of Nine! Pieces of Nine!)
Seriously: If you value it, take/fetch it yourself