Ted walks into the living room where Dougal is sitting at the table with his new rabbit. The rabbit is sitting in the middle of the table, facing away from Ted when he sits down, but in the next shot the rabbit is facing Ted with Ted stroking its fur.
At the beginning of the episode, when Dougal and Ted are discussing names for Dougal's new rabbit, the rabbit keeps moving positions on the table. This happens instantaneously between shots - at one point the rabbit is sitting facing away from Ted, a second later it is sitting facing Ted.
The security cameras pick up Jack running into the front door of the parochial house, which is locked with three other locks in order to keep Jack in. We don't see those locks in any other episode.