a platapuss
platypus
The animal you are describing is the platypus. It is a unique monotreme, meaning it is one of the few mammals that lay eggs. The platypus has gills during its early developmental stages, a pouch for carrying its young, and webbed feet, which are adapted for swimming. These distinct features make it one of the most unusual mammals in the animal kingdom.
a platypus
ducks
Fins and gills or webbed feet.
They have feathers They have webbed feet They lay eggs
Platypus
Salamander
it is an amphibian. it has webbed feet which helps it to swim in water the breathe through gills
mostly ducks have webbed feet
Rottweilers feet are not webbed.
Bats have webbed feet!