We've got a bumper edition of viral videos in this week's Trending on YouTube collection!

This time, we have a few ways to pop a cork, cats and dogs personified, an elevator ghost prank and an intense whale encounter!

This household hacker video shows you a few ways to pop your wine bottle's cork. (268 000 views)

Physicist Neil DeGrasse Tyson answers the question, "does the universe have a purpose?". (52 000 views)

Ever played "catch" with a robot before? Neither have we, but this new robot is pretty amazing. (287 000 views)

This clip personifies cat and dog stereotypes, making for a mildly amusing watch at the very least. (1.5 million views)

This elevator ghost prank from Brazil has gone viral, being shared on social networks and blogs all over the world. (3.5 million views)

This neat contraption for your bicycle makes a horse clopping sound. Fun. (163 000 views)

Page two: A whale encounter and the world's best cat toy!