What a Greyhound Puppy should eat changes across its life more than most owners expect. Portion size, not brand, is where most first-year problems start.
The puppy months
A growing large dog needs food formulated for its adult size. Two meals a day - never one large one, which raises bloat risk. Large-breed formulas exist to control growth rate, which protects developing joints - faster growth is not better growth.
Changing food
Phase any change over a week. An abrupt switch upsets the gut and tells you nothing about whether the new food suits a large dog.
Bloat: the one to take seriously
Deep-chested large breeds risk gastric torsion. Two smaller meals rather than one large one, no hard exercise for an hour either side, and learn the signs - a swollen abdomen with unproductive retching is an emergency.
What “gentle” means day to day
The Greyhound Puppy is described as gentle, quiet, fast. Of those, gentle is the one that shapes an ordinary day most. It is easy to read as a selling point and harder to live with than the word suggests, because it does not switch off when you are busy.
Adult portions
Portion against your vet's target weight and reassess monthly. The dog will insist it is starving regardless; that is not data.
Planning for about 11 years
A Greyhound Puppy is with you for about 11 years. Budget and routine both need to survive that, including the last quarter of it when a large dog needs more veterinary attention than it did young.
Storage in an Indian climate
Humidity spoils dry food faster than the printed date suggests. Smaller quantities through the monsoon, sealed, and look at it before it goes in the bowl.