"The Cattle" is the name of a chapter in the Qu'ran that deals with the struggle between Islam and the "unbelievers". I think the title comes from how Islam thinks of unbelievers: as cattle to be kept around as long as you can milk them, then slaughtered.
Saturday, 31 January - DAY OF HAJJ (Pilgrimage)
Sunday, 1 February - EID-UL- ADHA (Day of Sacrifice)
Sunday, 22 February - MUHARRAM (Islamic New Year)
Eid ul Adha refers to the sacrifice made by Abraham for "Allah." Abraham was told to sacrifice his son, and as he struggled and finally overcame his reluctance, "Allah" replaced his son with a lamb/sheep (??).
That act is celebrated on Eid ul Adha, and can in modern times is signified with the sacrifice of a sheep or cow, which is then cooked and distributed during the Day Of Sacrifice.
The celebration lasts three days, this year (2004) from 1 February through 3 February (although some discrepancies occur due to the imprecision of the Muslim lunar calendar, so it could be 2 February through 4 February).