Defending ones territory

So it's been 3 days since the boys went and had their castration, and so they were taken to the vets this morning, and they said it would be fine to let them outside now.  So I got this picture through on text earlier.  It's gonna be fun knowing there are atleast 3 large cats that seem to patrol the area, and only the other day after we'd let the boys out for half an hour, a big black cat with fur missing on his face decided to sniff around the garden.

This is my garden and I will defend it with honour