dog 69Normal. Uncouth, but normal. Try a command like no humping (the one I use with my dog and roomy's dog It works once they fure out what69. 13, 74. 14, 78. 15, 83. 16, 87. *Source: Pro Plan Dog Age Calculator. Large size dogs: 50+ lbs. Breeds, Dog Age, Human Age. Afghan Hound · Airedale Terrier.