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Table 8 Frequency distribution of cryptorchid male pups in relation to the number of male pups per litter, A) among all male pups born in litters with known sex distribution at the time of birth (116 litters and 401 male pups) and B) among the registrered pups (253 litters and 662 male pups)

From: A survey of dystocia in the Boxer breed

No. of male pups in litter A. Male pups born B. Male pups registered
  Cryptorchid male pups (%) No. of litters Cryptorchid male pups (%) No. of litters
0 0 4 0 29
1 7.1 14 20.0 35
2 10.5 19 19.3 57
3 14.8 18 17.5 61
4 9.2 30 9.2 38
5 7.8 18 9.5 21
6 25.0 6 6.1 11
7 0 7 0 1