To provide sustenance to new born young.
No. Only mammals have mammary glands. Bullfrogs are amphibians, not mammals.
No. Only mammals have mammary glands. Anchovies are fish, not mammals.
No kingdom consists of mammary glands. However, I believe mammals is the answer you are looking for. Mammals are all animals that have mammary glands.
Well they're mammals so yeah, all mammals have mammary glands
Mammary glands are the source of milk production in female (and some male) mammals
Stingrays don't have mammary glands. Mammary glands are only found on mammals. Stingrays are fish.
Yes. Like all mammals, the platypus has mammary glands.
No. Snakes are reptiles. Only mammals have mammary glands.
Mammals (both male and female) have hair and mammary glands.
Those are the mammary glands in all mammals
Mammals have mammary glands like whales
Mammals are a group of animals characterized by (in females) the presence of mammary glands. Mammals are a group of animals; mammary glands are a body part.