What is the name of feathery mammal?

There is no mammal that is truly "feathery" in the same way that birds are. Mammals have fur or hair, which are very different structures than feathers.

However, there are some mammals that have a feathery appearance due to their fur:

* Opossums: Their fur can appear fluffy and somewhat feathery, especially on their tails.

* Flying Squirrels: These squirrels have a membrane of skin that stretches between their legs, which can give them a feathery look in flight.

* Certain Bat Species: Some bats have very fine, silky fur that can resemble feathers from a distance.

It's important to note that these are just examples, and the "feathery" look is more of an observation than a true characteristic.