Sika deer are contiguous with populations of the native red deer. Since the two species sometimes hybridize, a serious conservation concern exists. In research which rated the negative impact of introduced mammals in Europe, the sika deer was found to be among the most damaging to the environment and economy, along with the brown rat and muskrat. In the 1900s, King Edward VII presented a pair of sika deer to John, the second Baron Montagu of Beaulieu. This pair escaped into Sowley Wood and were the basis of the sika to be found in the New Forest today. They were so prolific,
Sika Anoaʻi regained the championship on the September 9, 1980, episode of "WWF Championship Wrestling", defeating Tony Garea and Rene Goulet in the finals of a tournament. Their second reign lasted until November 8, 1980, when they lost to Garea and Rick Martel. The Wild Samoans left the WWF in December 1980. In January to February 1981, The Wild Samoans toured Japan with New Japan Pro-Wrestling, performing as "The Samoan #1" (Afa) and "The Samoan #2" (Sika) respectively. They competed in the New Year Golden Series, repeatedly facing Antonio Inoki and Seiji Sakaguchi. The Wild Samoans made a second tour of Japan