Read CCC. 1703, God Bless, Memaw
1703 Endowed with “a spiritual and immortal” soul, the human person is “the only creature on earth that God has willed for its own sake.” From his conception, he is destined for eternal beatitude.
What does “only creature” mean? It is from Gauduium et Spes
Indeed, the Lord Jesus, when He prayed to the Father, “that all may be one. . . as we are one” (John 17:21-22) opened up vistas closed to human reason, for He implied a certain likeness between the union of the divine Persons, and the unity of God’s sons in truth and charity.
This likeness reveals that man, who is the only creature on earth which God willed for itself, cannot fully find himself except through a sincere gift of himself.
It has nothing to do with animals but rather our own responsibility of self giving.
1704 The human person participates in the light and power of the divine Spirit. By his reason, he is capable of understanding the order of things established by the Creator. By free will, he is capable of directing himself toward his true good. He finds his perfection “in seeking and loving what is true and good.”
We can understanding the order of things in a way animals cannot. We have free will.
1705 By virtue of his soul and his spiritual powers of intellect and will, man is endowed with freedom, an “outstanding manifestation of the divine image.”
We can understand with our intellect and enjoy freedom.
1706 By his reason, man recognizes the voice of God which urges him “to do what is good and avoid what is evil.” Everyone is obliged to follow this law, which makes itself heard in conscience and is fulfilled in the love of God and of neighbor. Living a moral life bears witness to the dignity of the person.
This gives us obligations.
And so our experience, whether in this life or the next is different from animals. They do not understand as we do nor have the responsibilities we do. That does not necessarily exclude them. It only limits their understanding.