According to Carl Hagenbeck (1951), a male puma and female leopard produced a hybrid male cub that was reared by a Fox Terrier bitch at Hagenbeck Tierpark, Hamburg (fostering being normal practice at this time). This male hybrid was intermediate between the puma and leopard in color and pattern, having faint leopard spots on a puma-colored background. The body length was much less than either parent, while the tail was long, like the puma. Hagenbeck apparently bred these hybrids at the suggestion of an unidentified menagerie owner; however, the hybrids were considered dull and uninteresting. Modern geneticists find them more interesting because the leopard and the puma were not considered to be closely enough related to produce offspring.