wiewiórki

In a sentence

• Wiewiórki mieszkają w lasach i parkach.

  Squirrels live in forests and parks.

  Here, "wiewiórki" is the subject of the sentence, used in the nominative plural form to refer to the animals called squirrels.

• Oglądałem wiewiórki podczas spaceru w parku.

  I watched squirrels during a walk in the park.

  "Wiewiórki" is in the accusative plural form, functioning as the direct object of the verb "oglądałem" (I watched).

• Nie widziałem wiewiórek na drzewach.

  I didn't see squirrels on the trees.

  In this sentence, "wiewiórek" is in the genitive plural form, used after the negation of the object.