Western green mamba

The western green mamba ("Dendroaspis viridis"), also known as the West African green mamba or Hallowell's green mamba, is a long, thin, and highly venomous snake of the mamba genus, "Dendroaspis". This species was first described in 1844.
The western green mamba is a fairly large and mainly arboreal species. They mainly eat rodents and other small mammals.