Gestational Age in Dogs and Cats
Dogs: Gestational Age ± 3 days | Cats: Gestational Age ± 2 days | |
|---|---|---|
< 40 days | >40 days | >40 days |
(6 × GSDa) + 20 | (15 × BPb) + 20 | 25 × BP + 3 |
(3 × CRLc) + 27 | (7 × BDd) + 29 | 11 × BD + 21 |
(6 × HD) + (3 × BD) + 30 | ||
Days before parturition: 64–66 minus gestational age | Days before parturition: 61 minus gestational age | |
a Gestational sac diameter (cm) b Biparietal diameter (cm) c Crown rump length (cm) d Body diameter at the liver (cm) | ||