Continuity mistake: James after talking to the pushers outside his house steps in, and behind him we see Bob curled by the window. In the following close-up the cat is turned in a different direction. (01:21:00)
Continuity mistake: When Bob runs away during the incident with the pushy lady that wants to buy him off James, the cat is wearing his leash in some shots, and isn't in others. (01:16:50)
Continuity mistake: James is eating the non-Christmas lunch with Betty; he says "I'm tofu, and I'm inedible", and she laughs. In these two shots, she has different food on her fork. (00:55:30)
Continuity mistake: Throughout the conversation with Betty after Baz's OD, Ruta Gedmintas' hands/fingers change position on the cup between shots. (00:53:00)
Continuity mistake: At the end of James' performance of Silent Night, the cat lady hands him a can of food. The can turns around in his hand at the cut. (00:48:00)
Continuity mistake: The evening that follows the first successful performance, James opens a can of food for Bob. He puts the can to his left, but in the next shot the can is on the opposite side of the table, to Bob's right. (00:45:30)
Continuity mistake: During the first performance with the cat, singing "Satellite moments", a man in a brown sleeveless jacket and sporting a beard approaches James holding a shopping bag in his right hand. In the close-up of the cat he is bending to deposit the coins he had in hand, but his bag moved to the left hand. (00:42:30)
Continuity mistake: When James is on the bus with Bob, he is holding him with his hand positioned in front or behind Bob's front leg, depending on the shot. (00:39:00)
Continuity mistake: Inside the vet's waiting room, James gets ticket 62. Not too bad considering in close-up the digital display shows they are serving patient 57. But after half an hour passed, in the background before he says "Bob, look, it's the month of the cat" the counter is at 51. (00:26:20)
Continuity mistake: After the overdose in the car, James meets his social work to try and start again. He puts his paper cup on the desk. He drinks then from said cup. When she stands up, James' cup is fuller than before. (00:08:30)
Continuity mistake: James is counting pennies on the aptly named counter of the store. Take a look at the pile of money; there's one coin in particular which stands out, on top of the other flat ones, tilted to the left. A couple of shots later the coins slightly changed position, which is easy to tell noticing the change of position in that coin. (00:04:10)
Continuity mistake: The quantity of Kellogg's cereals in front of the cat's paws when James spots him vary between shots. (00:15:00)
Continuity mistake: James strokes the cat he just put on the counter in their first meeting. As he crouches, he puts his left hand above the right. When their eyes meet in the next shot (where incidentally the cat also looks right into the camera initially), the hands are swapped. (00:15:55)
Continuity mistake: During James and Bob's first meeting, in one early shot the box of cereals is on the counter next to the cat, while in the rest of the scene it's not there, nor it is supposed to since James gave his furry friend a lift but never picked the box up from the floor. (00:16:00)