Reference: Sharh ‘Umdatil-Fiqh – Tape No.4, Question No.15
Question: Is the one who touches a dog or a pig with his hand required to renew his wudhoo, or should he suffice with washing his hand?
Response: If it is dry, then he can touch it and does not need to wash his hand. If, however, it is wet then he should wash his hand, yes, he should wash his hand.