Table 1 Signalment of study cats

Hypercobalaminaemia (44)

9y2m (7 m - 18y 3 m)

22

22

30 (3)

14 (0)

5 Maine Coon, 4 Bengal ,3 Birman, 2 Burmese,2 Ragdoll, 2 Tonkinese, 1 Persian, 1 Oriental, 1 Siamese, 1 Sphynx

Normocobalaminaemia (62)

11y5m

19

43

36 (7)

26 (2)

(2 m - 16y 2 m)

6 British Shorthair, 4 Siamese, 2 Burmese, 2 Selkirk Rex, 1 Asian, 1 Maine Coon, 1 Norwegian Forest Cat, 1 Persian, 1 Ragdoll

Hypocobalaminaemia (50)

12y1m

16

34

41 (2)

9 (1)

(3 m - 10y 5 m)

3 Siamese, 2 British Shorthair, 2 Burmese, 2 Maine Coon, 2 Oriental, 2 Ragdoll, 1 Korat, 1 Norwegian Forest Cat, 1 Persian