By Zahra Khaliq A loyal dog lost its own life after clinging to its owner who became trapped by an oncoming tide at the beach. The rescue effort was captured in dramatic images as the man was seen being lifted onto a coastguard helicopter after he and his dog became stranded on the rocks of Perranporth Beach, Cornwall, on Wednesday afternoon. Holidaymakers said they heard the man’s cries and called emergency services at around 4.30pm. Coastguard rescue teams from St Agnes and Newquay, a coastguard helicopter and St Agnes RNLI lifeboat joined in the effort to save the pair as ‘huge waves’ swarm…