The Irish Wolfhound is one of the largest and tallest of dogs in the world. By the age of six months he can weigh as much as ninety pound and he does not reach maturity until twenty to twenty-four months. Dispute his great size he is the most gentle in nature. Known as the gentle giant, he is a perfect gentleman who shows no signs of aggression. Willing to please his owners he makes a good family dog for those who have adequate space and a lifestyle to feed him as he is rather expensive to look after.