In Islam the Quran is a miracle due to the fact that the Prophet was illiterate and could not possible write it. Another miracle includes the Prophet's night trip to Jerusalem to climb to Heaven and meet Allah.
The Catholic Church believes that Jesus rose up from the dead, that he parted the red sea, walked on water and healed the sick, among other miracles he has performed.
The question is vague. Not only catholics but other branches of christianity also stress much on miracles. We too see that other religions also have instances of miracles, implying ONE GOD.
the widely known Hindu example is consumption of milk by lord Ganpati idols. a Muslim example includes
splitting of moon by prophet Muhammad. Sikhism states a miracle concerning guru Nanak where a shiv linga kept sprouting where he kept his legs.
