Charlton Heston was 76 in Cats & Dogs when he played the character 'The Mastiff (voice)'.
That was over 23 years ago in 2001.
In 2008 he died aged 84, starring in 155 films in his career, 29 of those after Cats & Dogs was first released. If he were alive today he would be 100.
In Cats & Dogs, I think Charlton Heston looks: