I found it in Toronto, Ontario, during early June, 2015.
When prodded it seemed to jump around, or at least to move very fast.
I can also post a short video of it if needed.
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That jumping spider is a Jumping Spider! (That is, family Salticidae, commonly called Jumping Spiders).
There's a lot of diversity in the family, but your pictures look similar to the Zebra Jumping Spider.