The Thor actor wrote: "What started as a ground breaking music video ended in a savage attack by a cowardly K9. Never work with Kids or Animals."
He also tagged his brother, Liam Hemsworth, and Miley Cyrus, his soon to be sister-in-law, who reacted by commenting "Epic."
The hilariously cute video has already been viewed by over 10m people with many writing what we're all thinking: "You are so pure, we need to protect you at all costs."
Others wrote, "This is my favourite thing on the internet right now," and "ICONIC 😂."
One person noted, "Thor was unstoppable until the dog came along."
Now, excuse us, we're off to watch this on repeat all afternoon...