calve, with a single offspring, about once every five years. In analyzed resident pods, birth occurs at any time of year, with the most popular months being those in winter. New-born mortality is very high – one survey suggested that nearly half of all calves fail to reach the age of six months. Calves nurse for up to two years, but will start to take solid food at about twelve months. Cows breed until the age of 40, meaning that on average they raise five offspring. Typically females live to the age of fifty, but may survive well into their eighties or nineties in exceptional cases. Males become sexually mature at the age of 15, but do not typically reproduce until age 21. Males live to about 30Tennis roundup: Serena defends Brisbane crown

BRISBANE, Australia — This was one time Serena Williams didn’t mind being pushed into the deep end, to use her own description.

The top-ranked Williams carried her winning momentum into 2014, beating No. 2-ranked Victoria Azarenka, 6-4, 7-5, Saturday to defend her title at the Brisbane International and set the tone for the Australian Open.

The Williams sisters were hoping to both win a WTA Tour event in the same week for the first time in 15 years, but Ana Ivanovic prevented that when she beat Venus Williams, 6-2, 5-7, 6-4, in the final of the ASB Classic in Auckland, New Zealand.

Ivanovic claimed her 12th career singles title and her first since Bali in 2011.

NADAL TAKES TITLE: Rafael Nadal won his first title of the