Theoretically all mammals are milk-able due to the presence of the mammary glands in all female mammals. But not all animals are convenient to milk (e.g. A hamster would be difficult to milk due to it's size). That being said, here are some animals that people have been known to get milk from in times of need (or want):
Dairy cattle also called dairy cows or milk cows bred for the ability to produce large quantities of milk, from which dairy products are made
GOAT
There is not an animal that produces red milk. Most animals that produce milk have white or creme colored milk.
No, It is made from the separation of milk from any animal that can produce milk.
wholestein
Because their milk is in much higher demand than human milk.
They don't. They produce white milk, hippos produce pink milk
Goats produce cheese, milk and meat.
Holstein dairy cows tend to produce more milk than any animal in the Animal Kingdom except for most whales.
Depending on either quality or quantity of milk the cow produce can make three. IF its quality then the first is Jersey,Heshire and Fresien the vice versa order is the quantity of milk and by that it means butter content.
I believe that Pigeons and Flamingos produce a 'crop milk' that they feed to their young by regurgitation.
Each animal produces something else. Some produce milk, some produce eggs etc.
holstein cows are known for their high quantity of milk production although other breeds of dairy cattle produce a higher quality or butter fat content than the holstein. the jersey cow is one example of milk cow that produced a lot of cream in the milk.
If an animal have their ears outside is a mammal and whose ears are not outside are not mammal.