They had fur.
It is called loss of fur or fur loss
No dinosaurs have scale like skin mammoths have fur
because this fur is an adaptation
there fur keeps them warm
have fur and four legs
their fur
The color of their fur blends in with the environment
Poodles, bichons, Portuguese water dogs and Spanish water dogs all have wool type fur. Their fur is thick an curly but do not shed as bad as other breeds.
fur covering
An adaptation is a feature which helps an organism survive in its normal habitat. For example animals which live in the arctic have thick fur to reduce heat loss. The thick fur is an adaptation.
An external adaptation is an adaptation that is out side of your body. For example Dark fur to blend into trees. And adaption is what you adapt to so you can live longer.