He claimed crashing out of the bloc would have “consequences in multiple areas” from “the capacity of British planes to land in Europe to that of dogs and cats to cross the Channel”.
Tory Eurosceptic Jacob Rees-Mogg slammed the comments as “really very silly”.
He is now negotiating absurdly
“It undermines his credibility.”
Under current rules, Britons need a pet passport for their animals which confirms they have been vaccinated against rabies.
Mr Rees-Mogg added: “The worry has always been of rabid animals coming from the Continent.
“I’m all for keeping rabid eurocrats out of the UK.”