This is the 8108th most frequent Spanish word.
nutrias
Otters.
In this sentence, 'nutrias' refers to the animals in a general sense, serving as the subject of the sentence.
Las nutrias son animales acuáticos que viven cerca de los ríos.
Otters are aquatic animals that live near rivers.
Here, 'nutrias' is used in a specific context to indicate the animals seen on a particular occasion, serving as the object of the sentence.
Ayer vimos nutrias jugando en el agua durante nuestra caminata.
Yesterday, we saw otters playing in the water during our hike.
In this context, 'nutrias' is used to detail a characteristic of the animals, continuing as the subject of the sentence but in a descriptive manner.