"In an unexpected twist, the humble 'Cow' emerged as 'Personality of the Year', trumping other high-profile contenders for the top spot. It started with the Maharashtra government announcing a ban on sale of beef in the state - a move, which led to massive debates online and offline, spiraling into the 'beef controversy'," Yahoo said in a statement.
It further said: "Fuelled further by the mob lynching at Dadri, the 'cow' became the icon of discussions on 'intolerance', sparking the 'award wapsi' campaign, and even stalling the Parliament proceedings at one point".
The review is based on users' daily search habits and an editorial selection of what they read, recommended and shared most on Yahoo.
"Politics remained an all-consuming passion through the year in 2015. With high-profile elections in Bihar and New Delhi, Chief Ministers Nitish Kumar and Arvind Kejriwal were among the Top Newsmakers of the Year. Prime Minister Narendra Modi continued his run from 2014 and remained one of the top newsmakers this year too," Yahoo said.
Sunny Leone retained the top position as the most searched female celebrity for the fourth year in a row, while Salman Khan claimed the No 1 spot in the most searched male celebrity list.
India's most searched sportsperson saw MS Dhoni topping the list, while Apple dominated technology news and searches this year with the iPhone 6 taking the top spot in the list of most searched gadgets.