"I got him as a six-week-old. I called him Caesar because when he was a pup he tried to stand up to me and did that typical bulldog stance, barking away, so I thought Caesar, Roman emperor."
He said he was overwhelmed by the number of tip-offs from people believing they had seen his dog.
"About 200 to 400 messages on Facebook a day, 10 to 20 phone calls and about 50 to 60 texts."
With the help of friends, Mr van Hooff has distributed posters around Clive, Havelock North and parts of Napier and Hastings hoping someone knows where his tan-and-white bulldog is.
He said Caesar had distinctive markings, including a black tear drop under his right eye and a patch of faded brown fur on his right side. He was wearing a grey collar when he disappeared.
If you have seen him or if you know where he is, contact Constable Lyndon Large on 06 8310700 or information can be left anonymously on Crimestoppers 0800 555 111.