external fertilization
hair
The common ancestor of mammals and birds was a reptile.
ectotherms because how they react is simaler to their functions but reptiles are enthoderms
They are both mammals...........................................................................................................thats it.
they r both mammals.
Both birds and mammals care for their young.
It is rephrased as mammals are homeothermic animals .
They are mammals
To provide sustenance to new born young.
Reptiles and mammals are vertebrates. They both breathe air.
They are both mammals.
they are both mammals