Back & front claws grow at different rates?

Since I've been clipping Bertie's claws with scissor types, I've been able to get more off the claws, and have noticed that the fron ones seem to grow faster than the back ones. I can get about double the length from the front ones. Is this normal?

Yes, it is and it's because when they are tunneling and digging they use their front paws and the nails get worn down quicker and are more likely to get damaged so they grow more:thumb:

A-ha, that makes sense, thanks Theo