Sometimes all it takes is a change in mindset — no matter how small — to turn a crappy day into a good one. To help you shift into a happier gear, we’ve rounded up five things from around the web that inspire and delight us, and we hope they’ll do the same for you. We share our favorite happiness-boosters each week, so be sure to check back — and share your own in the comments below!

1. This video of a cat in a shark costume chasing a duck while riding a roomba

If for some reason this video doesn't make you laugh, it will make you question the bounds of human absurdity.

Photo: CreeHawk

2. This story about a dog who jumped between his owner and a rattlesnake, receiving the bite on his owner's behalf (the dog was okay)

The chihuaha-poodle mix's name is "Psycho." Either he lives up to the moniker, or he's pretty darn sane after all.

Photo: Emma Williams

3. This picture of a (nearly) blind King Charles spaniel and her German Shepherd seeing eye dog

Ellie may not have her sight, but she's got a friend in Leo.

Photo: Adrian Walton

4. This story about a boy with cancer who was given a giant Lego playhouse courtesy of the Make-a-Wish Foundation

Photo: Mark Gurney via BookNews

5. This discovery of the first carnivorous species in the Western Hemisphere found in the last 35 years

The onlinguito may be a fierce (er, kind of) carnivore, but that doesn't stop it from looking cuddly as all get out.

What's making you happy this week? Share in the comments below!

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