I want to buy a cow

For dairy, look for Sahiwal, Gir, HF cross, or Jersey cross. First milk the cow in your presence, then do a CMT test on all four quarters, check which month of lactation she is in, and verify age and body condition. If the deal is above fifty thousand rupees, take a Pashumitra or vet with you before paying. If you want fifteen liters consistently, buy two cows with staggered calvings.