This is the 'Rocky' of wildlife videos.

A wildlife video of a bear mum and cub traversing a mountainside hundreds of feet up has captured the imagination of millions of Twitter users.

Watching this video you will go through a series of emotions:

1. Biting your nails.

2. Gasping for breath.

3. Hiding your eyes behind knitted hands.

And finally punching the air and screaming!

Give it a go.

This is guaranteed to get you rooting for this little guy.