03/24/2013 07:54 am ET

Animal Photos Of The Week: White Tigers, Giraffes, Elephants And More Pictures

Here’s a recap of animal stories and events from the past week:

A few milestones:
A study involving chimps sheds light on the evolution of teamwork
Scientists may have uncovered the mystery behind roosters’ irksome morning crowing
Two new lizard species were discovered in Peru
The possibility of de-extinction has the scientific world buzzing

Some sad, strange news:
Dead prawns wash ashore in Chile, turning the beach red
Thousands of pig carcasses pile up in China, but the government offers very few answers
Dogs mysteriously vanish in Idaho, and leave police officers perplexed

Interesting finds:
Kali the orphaned polar bear cub moves to a new home at the Alaska Zoo
Here are 20 species that you might not have known were endangered
A deer bolts from a car trunk and scares Michigan police officers in this quirky video
Isaac the blind husky relies on Isabella, his seeing-eye dog

Check out the newest and best animal photos below:

Awesome Animal Photos Of 2013