Claws are read as the ability to defend yourself and hold on. Growing them in a dream mirrors anger or self-protection that is becoming harder to hide.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.