Long naps?

SL

Any babes taking long naps all of a sudden? My little guy took an hour and a half morning nap yesterday and then 4.5 hour afternoon nap. Went to bed at 7:30 and woke up at 6. Today he took another 4.5 hour nap and had to be woken up to eat. Is this normal? Possibly teething? He seems to be acting normal otherwise.