I bought a new guinea pig yesterday. I'm so stupid but I thought the little thing might like a bit of time in the run. In 3 seconds the little thing managed to find the one bit of the run that wasn't absolutely level and got out, the gap was tiny. And then he ran and ran and ran under the shed 
The shed is sunk into the grass a bit so it's really hard to see or do anything. He's got himself trapped in the concrete blobs that the paving slabs sit on that support the shed. I could hear him squeaking and tried to lever him out with a stick but he won't budge. The only way I can see where he is to take a pic with my phone in the gap. I can see his little face set right back in a little cave of concrete
How on earth do I get him out?