Estrela Mountain Dogs and Spanish Mastiffs are also both classed as large dog breeds. The cheapest large dog breed to own is an Irish Wolfhound, with an average lifetime cost of £4,348.45, which ...

That, it seemed, was wider than necessary for most large breeds. A 99-pound Bernese mountain dog fit just fine on our best overall choice, the Griffith, which was 35 inches wide and 54 inches long.