Went out to check, Mudge came back but not Houdini. Looked for him for a bit, no response to our calling and whistling. Headed back into the house and bed, Smudge sounded off again about 45 minutes later. Went out to check, here come's Houdini.
Glad he's OK.
Herself tells me there's a new sinkhole over in the cattle paddock. Joy.