Question about teeth

Hello guys,

I was observing Toby's teeth when he was biting on the grilles... I noticed that his lower teeth is almost not seen... There is only alittle bit of teeth.. Mayb 0.1mm? The upper teeth is aso short.. But not like the bottom so jialat... Is there anything wrong with it? Well he is eating/pooing and everything is fine...

Just alittle background on Toby... He jus loves to chew on the pine blocks i give him... Earlier he had an abcess.. But he is clear of it ever since... He is a fur chewer... but recently i dun find him chewing at his fur as much... But the uneven furs can still be seen at some parts of his body...