Not eating his breakfast after VHD vac?

Chedi had his VHD vaccine this morning..but still hasn't finished his breakfast?

He's eating hay and drinking water, and peeing loads, as usual - and is still hopping about fine. Should I be worried about him not eating all of it?

Or could it just be the weather being its alot warmer today? (my dogs don't eat as much when its suddenly gets hotter..)

Only just seen this. How is your bun now?

They often go off their food - it's just a side affect and will pass in a day or so. If he's eating hay don't worry.