There is no 'real' way of knowing 'if' she is in pain or not, b/c dogs will try their best to hide pain.
...but if she is in Grade 4 LP - just knowing exactly what Grade 4 LP is, tells me that she is definatley feeling pain and by carrying her leg tells me she is in pain and something is feeling very discomforting.
Please do not delay in seeing an Ortho Specialist. What ever damage that is done with LP can not be reveresed.
Keep us updated.
