close to significancep = 0.085
However, by pooling cold challenges of insulated and non-insulated pups grouped by six or two, local heating for G6 pups was significant at 18°C (+1.4°C compared with G2 pups, U = 154, p = 0.05), and close to significance at 15°C (+1.8°C, U = 149, p = 0.085) and at 11°C (+2.4°C, U = 150, p = 0.076; Table 1 ).