The correct translation of the sentence to Spanish is:
<u><em>Los animales están corriendo a la casa</em></u>.
Explanation:
The sentence given belongs to the Progressive Tense, which is characterized in Spanish by using the conjugation of the verb <em>"estar,"</em> and <u>the verb that expresses the action ending in</u> <em>"ando"</em> or <em>"endo."</em> Next, I show you the conjugation of the verb <em>"estar"</em> depending on the personal pronoun:
How the noun given in the sentence is <em>"los animales,"</em> which could be replaced by the personal pronoun <em>"ellos,"</em> the right conjugation is <u><em>"están."</em></u>