I'd get him insured soon as my staffie reached 7 and wasn't insured (an oversight!) and his policy virtually doubled. I suppose thats because he's more likely to suffer which his health. Things to look out for with staffies are hip displaysia (sp) and problems with teeth - mine has both! I missed a cracked tooth while he was out of insurance and cost me over £600 to have on of his canine teeth removed under anaestetic