They are all warm blooded and they can give birth to live young
What Do All Mammals Have In Common?
Well they are all warm blooded have 4 limbs and reproduce sexually not asexualy
They have four limbs
They all are warm blooded and produce milk.
They are all vertebrate's
Well they are all warm blooded but not all bear live young.(Platypus and Echidna)
They all are warm blooded the eat they can die and love to swim in lakes.
They all eat crap for breakfast