What is the Catholic Church's teaching on the Nature of Jesus?

Answer 1

The Nicene Creed (from the year 325) talks about the nature of Jesus Christ:

We believe in one Lord, Jesus Christ, the only Son of God, eternally begotten of the Father, God from God, Light from Light, true God from true God, begotten, not made, one in being with the Father. Through Him all things were made. For us and our salvation He came down from heaven: by the power of the Holy Spirit, He was born of the Virgin Mary, and became man. For our sake He was crucified under Pontius Pilate; He suffered, died, and was buried. On the third day He rose again in fulfillment of the scriptures: He ascended into heaven and is seated at the right hand of the Father. He will come again in glory to judge the living and the dead, and his kingdom will have no end.

The Catechism of the Catholic Church explains what we believe in depth:
http://www.nccbuscc.org/catechism/text/pt1sect2chpt2.htm

With love in Christ.

Answer 2

That Jesus was the Son of God, the Second Person of the Holy Trinity, which consists of God the Father, God the Son, and God the Holy Spirit.
Although fully divine, the church says Jesus was also fully human. His title was the Christ, which comes from Greek, Christos. Christ is not his last name.

The analogy in Hinduism is also a trinity. Brahma, Vishnu and Shiva; the Creator, the Preserver, and the Destroyer.

Answer 3

The Catholic Church teaches that Jesus Christ is fully divine and fully human.

Answer 4

III. TRUE GOD AND TRUE MAN

464 The unique and altogether singular event of the Incarnation of the Son of God does not mean that Jesus Christ is part God and part man, nor does it imply that he is the result of a confused mixture of the divine and the human. He became truly man while remaining truly God. Jesus Christ is true God and true man.

God bless.