Refers to a specific type of animal.
El moleño que encontramos en el jardín parece haber hecho su hogar en nuestra casa, disfrutando del sol.
The mole we found in the garden seems to have made its home in our house, enjoying the sun.
El moleño que preparó mi abuela es el más delicioso que he probado en mi vida.
The mole that my grandmother prepared is the most delicious I have ever tasted in my life.