One would be producing milk...
The other is fur
Having fur and producing milk.
Objective and Subjective.
All mammals have hair and nourish their young with milk.
Its rings and its ability of floating in water if there was a bathtub big enough.
two
Disinguishing is not an actual word. If you're looking for distinguishing, here is an example. It was easy for the police to identify their suspect as he had many distinguishing physical characteristics such as a red beard, one leg, and was blind.
they are exotic and they have unique characteristics.
There are no placental mammals which lay eggs.The only two egg-laying mammals in existence are the platypus and the echidna, which are classed as monotremes.They are still classified as mammals because they feed their young on mothers' milk - a characteristic unique to mammals alone.
Unique characteristics of Indian art include symbolism like Hinduism and Buddha, lots of bright primary colours and two dimensional pictures with little depth.
The two definitive characteristics that make the platypus a mammal are: 1. It nurtures its young on mothers' milk. 2. It has fur. No other group of animals both these characteristics.
The platypus and the echidna are the only two egg-laying mammals in existence. They are classed as monotremes.They are still classified as mammals because they feed their young on mothers' milk - a characteristic unique to mammals alone.
Mammals have several defining characteristics, two of which are commonly cited. First, all mammals have hair on their skin and teeth. Second, all mammals nurse their young through the secretion of milk from mammary glands.
Penguins lay eggs, but they are not mammals. They are birds. The only two egg-laying mammals in existence are the platypusand the echidna, which are classed as monotremes.They are still classified as mammals because they feed their young on mothers' milk - a characteristic unique to mammals alone.