diff --git a/src/init/setupVars.tw b/src/init/setupVars.tw
index 24934d79dc667f2682a9eec9b06fb4d03e8cbe01..82a4a5c10834bb64588e54df7f73e305c136c25d 100644
--- a/src/init/setupVars.tw
+++ b/src/init/setupVars.tw
@@ -21,6 +21,8 @@ canineL: {type: "canineL", normalOvaMin:2, normalOvaMax: 6, normalBirth: 9, minL
 
 pig: {type: "pig", normalOvaMin:8, normalOvaMax: 12, normalBirth: 16, minLiveBirth: 14, drugsEffect: 0.5, fetusWeek: [0, 3, 16, 16+28, 16+48, 99999], fetusSize: [0, 1, 1700, 94000, 170000, 170000], fetusRate: [4, 4, 4, 4, 4, 4], sizeType: 1},
 
+cow: {type: "cow", normalOvaMin:1, normalOvaMax: 1, normalBirth: 41, minLiveBirth: 38, drugsEffect: 0.05, fetusWeek: [0, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4, 8*4, 9*4, 9*4+90, 9*4+180, 99999], fetusSize: [0, 1, 20, 280, 1500, 3200, 6100, 15000, 23000, 50000, 350000, 500000, 500000], fetusRate: [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4], sizeType: 1},
+
 equine: {type: "equine", normalOvaMin:1, normalOvaMax: 1, normalBirth: 48, minLiveBirth: 44, drugsEffect: 0.05, fetusWeek: [0, 5.7, 8.5, 11.4, 14.2, 21.4, 25.7, 34.2, 38.5, 45.7, 48, 192, 99999], fetusSize: [0, 14.1, 28.3, 56.7, 453, 2721, 11339, 20411, 34019, 54431, 57000, 600000, 600000], fetusRate: [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4], sizeType: 1}
 
 }>>  /* Source data for canine include CTR (not head to toe size), so CTR do not apply anywhere, always 1.*/