For the Islamic festival of Eid ul-Azha, or the Feast of Sacrifice, animals can be sacrificed as a way to observe this festival. In Dhaka, the capital and largest city of Bangladesh, people of the Dhaka South City Corporation have selected at least 602 spots for the Korbani sacrifices scheduled to happen on August 22nd, which is the day that many Bangladeshi Muslims are to celebrate the Feast of Sacrifice. Officials said that about 90% of the waste, with the total waste estimated at around 22,000 tons, was removed within 24 hours last year. In 2016 there was rain, which mixed in with the blood of the sacrifices caused what appeared to be a creek of blood running through a part of Dhaka.
Bangladesh is the 12th most densely populated county in the world, and Dhaka is the 5th most densely populated city in the world. Concerns about overcrowding at markets by some consumers has driven up the demand for online sacrificial cow buying. Bikroy.com, a classifieds website kind of like Craigslist but with more oversight since they review ads, has had a reported doubling of sales of online cattle sales this year compared to last year. Online selling also has the advantages of prices being fixed, instead of haggling for prices at a market, and there are no hidden costs which might occur at markets. Delivery of the sacrificial cattle is reportedly free if bought online through Bikroy.com. These advantages of buying online are a reason why buying sacrificial cattle online through the website can seem more expensive than buying at a market.