Get out of our Backyard!

Obi & Leia are 2 of the friendliest cats I've ever owned. They get on pretty well (most of the time) with our other 2 cats and are very sociable. But they HATE my neighbours cat Murphy. Luckily they didn't go charging out the cat flap to tell them what they thought of him when they spotted him on our decking today, but they did sit there for ages giving him "evils" through the patio doors! Not that he seemed particularly bothered!