Rather than excrement I think this is something an animal has regurgitated. It is exactly the sort of thing our cats vomit up at times.

I'm inclined to agree with that. A six foot wall, of course, is no more than a stepping stone to a cat.

Thanks for replying. Do you think so - a cat? It has a long 'cyclindrical' part to it...

Just the same shape as our car's vomit. What a delightful subject lol...

As I said the sort of thing we see if daughter cat has eaten a 'past its best before' mouse or similar. Regardless of the wall you must have a gate or some other entry to your garden...

Could also be a fox. They can easily deal with a six foot wall. Would be a certain colour especially if its recent diet has been chicken takeaway.

Would have expected to be bigger if a fox but perhaps not Jimmy.

Many thanks for your contributions. Much appreciated.

I also immediately recognised this as cat vomit. :) Nice