Cat Eyed Snake - Telescopus fallax

Commonly known with names such as Cat Eyed Snake, Soosan Snake, Mediterranean Cat Snake, and European Catsnake, Telescopus fallax (Colubridae) is a species of colubrid snake with wide distribution in the Mediterranean area, and in the Caucasus Mountains, including in Armenian, Azerbaijan, Georgia and southern Russia, Iran and Iraq.

These snakes are opisthoglyphous (their rear fangs are grooved and possess venom injected by a pair of enlarged teeth), though their venom only affects small vertebrates, producing illness in humans if bitten. 

References: [1] - [2] - [3]

Photo credit: ©Guy Haimovitch | Locality: Shfela, Israel (2009)


In May 2013 during the first two weeks of Project Chicchan surveys at Las Guacamayas, we were fortunate enough to find a Yucatán cat-eyed snake (Leptodeira frenata).

I had seen a photo from the station of this species so I knew it was found here, but I had never seen one before. They are medium sized snake with maximum recorded length of around 70cm.

The genus Leptodeira are widely accepted to be docile creatures and although they have rear-fangs at the back of the mouth and are mildly venomous they are not considered dangerous to humans and published literature suggests that only mild local swelling results from their bite.

It was also in May 2013 that I was unfortunate enough to be bitten by the above snake on my middle finger, while handling the snake in the field. At first I was merely surprised as …

[read more : warning, somewhat gorey photo of a snake bite]


The many faces of the boomslang (Dispholidus typus)

Many venomous members of the family Colubridae are harmless to humans because of small venom glands and inefficient fangs. However, the boomslang is a notable exception in that it has a highly potent venom, which it delivers through large fangs that are located in the back of the jaw.  Boomslangs are able to open their jaws up to 170 degrees when biting. The venom of the boomslang is primarily a hemotoxin; it disables the blood clotting process and the victim may well die as a result of internal and external bleeding. The venom has been observed to cause hemorrhage into tissues such as muscle and brain. Other signs and symptoms include headache, nausea, sleepiness and mental disorders.

blacat333 asked:

Hi ! I wish to get someday a hognose snake, but I would like to know if they are venomous. I tryed to search on internet, but sadly, I only find debates of people screaming that they are, and other saying that they aren't. I am in Québec, Canada, and I'm still trying to find information to know if they are legal here. Thank you if you answer my question, have a nice day ! ^^

Hi there!

Hognose snakes are definitely venomous and there should be no debate about that. It’s a fact. They possess venom.

The debate is whether or not the venom is of medical significance to humans. Most people who have been envenomated by hognose snakes have noticed localized swelling, some discomfort and redness, and a short reaction time. There is evidence to suggest that persons sensitive to bee stings may have a more severe reaction, but honestly it’s pretty much all anecdotal because hognose snakes are: 

A) fairly unlikely to bite, and 

B) rear-fanged, making it somewhat difficult for a small snake to get their fangs into a large person in the rare case that they DO bite.

I’ve been bitten exactly one time in my many years working with hogs (One of my boys thought I smelled yummy during hangout time) and it was a shallow bite so he didn’t get his fangs into me. I’m inclined to say that the bite risk is very small. To be safe, though, I recommend that very young people and those with weakened immune systems or bee sting allergies avoid hognose snakes as a pet. 

I know that there are hognose breeders in Ontario, so I assume they’re legal to own there, but I’m not aware of the laws in Québec. I hope that this helps somewhat and I wish you the best in your Hognose Quest!

okay i don’t like snakes but this snake

this one is adorable

This is a Black Halloween Snake Pliocercus euryzonus. In Spanish they’re brujita (little witch; how’s that for a cute name?) or cora falsa. They’re Least Concern and locally common- I’ve seen them a handful of times in my field site in Milpe, near Mindo in Ecuador. They’re venomous, but rear-fanged so they aren’t dangerous to humans at all. They eat bugs.

my source is this book, which I don’t have handy so take from that what you will.

no me gustan serpientes pero esta serpiente

esta serpiente es linda

Esta es una Brujita, también conocida como cora falsa. En ingles son llamadas Black Halloween Snake (serpiente negra de Halloween). Son un especie de preocupación menor y son común en unas lugares- las he visto unas veces en mi sitio de estudio en Milpe, cerca de Mindo, Ecuador. Son venenosas, pero no son peligrosas- no pueden picar humanos y su veneno no es peligroso. Comen insectas.

Mi fuente es este libro