dog 6969. 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.69. 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.