I see you're looking for unpublished data, but we've published a few short natural history notes on a handful of prey items from Massasaugas (Sistrurus catenatus). Would those data be of use to you? If so, I can compile them and send to you.

Hello Sasha! Well published is even better, but unfortunately rpm is rarely reported. But yes that would be great! Thank you

Hi Xavier, For example, I have observation of two Cuban endemic snakes predating: one  a frog  and the other predating black rat and hutia (cuban endemic rodent). Do you need the data of SVL and body mass of the animal implicated or the means of both variables for each species in general?

Do you know and checked the book?

Henderson, R.W., and R. Powell. 2009. Natural History of West Indian Reptiles and Amphibians. University of Florida Press, Gainesville, Florida, USA.

Hi Xavier, I observed in the locality Loma de Cunagua (central Cuba) only in one night and under a big big rain, 4-5 cases of predation of Tropidophis melanurus over Osteopilus septentrionalis. I take some pictures. At least it were intents of predation. The frogs inflate exggerately to avoid the predation. I never saw the final result and if the snake complete the predation

The book Henderson and Powell (2009) has many data of diets and all data of SVL for Caribbean amphibians and reptiles

Thank you very much for the information Rafael! I will try to get my hands on the book. And very cool observations with Tropidophis! Do you know if they actively chase prey or are they ambush predators?

I am not herpetologist but I think all Cuban snake  are more ambush predators

I have data for around 10 european  (mainly croatian) species. I collected it for a local publication but it was never published. Maybe we could talk privately?

Hello Dusan! For sure. Sending you a message now.