27-08-2014 07:00

Two polar bears arrived at the South African zoo in 1985. They were only a year old, and they became life-time partners.

One of the bears suffered a heart attack. People found it dead in the pool in January. The other bear became the last polar bear in Africa, as well as a very depressed bear. It missed its friend a lot. The death broke its heart.

The broken-hearted bear suffered liver and heart failure last week. It had to be put down.

Difficult words: failure (when you have failure of an organ, the organ stops working), put down (kill without any pain).

You can read the original story and watch the video in the Level 3 section.