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Table 1 Cross tabulation of hearing status in 1060 English Bull terrier puppies by coat colour, iris colour, gender and parental hearing status

From: Prevalence, heritability and genetic correlations of congenital sensorineural deafness and coat pigmentation phenotype in the English bull terrier

  Puppy hearing status Total
Normal Unilateral deafness Bilateral deafness  
Coat colour Coloured 517 (99.23 %) 3 (0.58 %) 1 (0.19 %) 521
White 149 (79.26 %) 29 (15.43 %) 10 (5.32 %) 188
White with head patch 271 (80.65 %) 55 (16.37 %) 10 (2.98 %) 336
White with body patch 5 (100.00 %) 0 (0.00 %) 0 (0.00 %) 5
White with head and body patch 10 (100.00 %) 0 (0.00 %) 0 (0.00 %) 10
Gender Male 494 (90.31 %) 43 (7.86 %) 10 (1.83 %) 547
Female 458 (89.28 %) 44 (8.58 %) 11 (2.14 %) 513
Parental hearing status Normal in both parents 436 (91.60 %) 34 (7.14 %) 6 (1.26 %) 476
Normal in sire and unknown in dam 227 (89.37 %) 20 (7.87 %) 7 (2.76 %) 254
Normal in dam and unknown in sire 108 (94.74 %) 4 (3.51 %) 2 (1.75 %) 114
Unknown in both parents 181 (83.80 %) 29 (13.43 %) 6 (2.78 %) 216