The 14th Tirthankar is Bhagwan Anantnath.

His lanchhan (symbol / sign) is:

• Śvetāmbara tradition: Falcon (a powerful bird, symbol of high spiritual vision and strength)
• Digambara tradition: Porcupine (symbol of strong protection from karmic bondage and firmness on the spiritual path)

You can read more about Bhagwan Anantnath here