The appearance of a Brazilian fish has sent a chill through summertime swimmers in Sweden and Denmark. The alarming fish is the pacu, a cousin of the piranha, which has large teeth and a reputation for biting men's testicles.
The Gaboon viper is found in the rainforests and savannas of sub-Saharan Africa. The world's heaviest viper snake, it lies in waiting, ready to sink all 2.2 inches (5.6 cm) of its fangs into its prey.
The Gaboon viper is found in the rainforests and savannas of sub-Saharan Africa. The world's heaviest viper snake, it lies in waiting, ready to sink all 2.2 inches (5.6 cm) of its fangs into its prey.
The Gaboon viper is found in the rainforests and savannas of sub-Saharan Africa. The world's heaviest viper snake, it lies in waiting, ready to sink all 2.2 inches (5.6 cm) of its fangs into its prey.
The Gaboon viper is found in the rainforests and savannas of sub-Saharan Africa. The world's heaviest viper snake, it lies in waiting, ready to sink all 2.2 inches (5.6 cm) of its fangs into its prey.
BBC biologists have found a rat the size of a cat, a kangaroo that climbs trees, a frog with fangs... cohabiting in the inaccessible highlands of Papua New Guinea.