The Sinaloan is native to northwestern Mexico. It can reach nearly 3 feet long (1 metre).
The Pueblan, also called Campbell's Milk Snake, is native to southern Mexico. Milk Snakes are not venomous
and are harmless to humans but several of them look similar to the highly venomous Coral Snakes that also tend to have red and
black banding (often with yellow warning colour rather than white). This is known as Batesian mimicry and the confusion
is intended in nature to protect them from predators. However, in the human world, it has the opposite effect,
since many are killed in the mistaken belief they are venomous.
The Honduran Milk Snake is native to rainforest of Honduras, Nicaragua and northern Costa Rica.
One of the larger milk snakes, it can grow to over 4 feet long (1.2 metres) in the wild and to some 5 feet in captivity.
Its usual colouring is a red base with white or yellow bands bordered with thick black bands (mimicking a venomous Coral Snake).
All three of the above Honduran Milk Snakes are unusual (but not rare) in their colouring: the one on the left with no white/yellow bands
(melanistic), the one above centre with no black and the one above right with no black/yellow bands (called "albino" despite the red with white).