My son looks like my father!

Titus has looked an awful lot like my dad from day 1, but these last couple of days I have been freaked out by the resemblence. I keep looking over and seeing my dad, only shorter and with a little more hair and no teeth! I'll have to see if I can get ahold of a baby picture of him, I bet they'd be difficult to tell apart, other than the obvious aging of the pictures!