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20 Cards in this Set
- Front
- Back
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Which snake is the only type to have smooth scales? |
Milk snake (the rest all have keeled scales) |
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Which 5 snakes have divided anal scales? |
1. Northern Water Snake 2. Eastern Fox Snake 3. Gray Ratsnake 4. Red-belly Snake 5. Brown snake (the rest all have single anal scales) |
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What are some key characteristics of snakes in general? |
1. brille instead of eyelids 2. no external ears 3. hemipenes 4. forked tongue 5. carnivores |
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What is the only Viperidae species found in Ontario? |
Eastern Massasauga Rattlesnake |
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What is the difference between a male snake tail and a female snake tail? |
Female: shorter and tapers off after anal scale Male: longer with same thickness after anal scale |
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What are the two different types of scales? |
1. keeled 2. smooth |
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what is the purpose of anal scales? |
to cover the vent |
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where does the tail begin? |
after the vent |
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What are the 9 types of Colubridae snakes? |
1. Northern water snake 2. eastern garter snake 3. eastern ribbon snake 4. eastern milksnake 5. eastern hognose snake 6. eastern foxsnake 7. gray ratsnake 8. red belly snake 9. brown snake |
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what is the difference in pattern between eastern garter snakes and eastern ribbon snakes? |
garter yellow line pattern on scale rows 2 and 3 ribbon yellow line pattern on scale rows 3 and 4 |
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what type of pupils do colubridae snakes have? |
round pupils |
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are some colubridae snakes venemous? |
yes |
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how do you measure colubridae snakes? |
snout vent length (SVL) |
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what colour is the norther watersnakes belly? does it have a distinct pattern? |
belly colour = creamy yellow has two rows of half moon shaped |
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is the eastern milksnake a constrictor? |
yes |
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what is distinct about the eastern hognose's behaviour |
its antipredator response |
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how do you tell apart a eastern foxsnake from a gray ratsnake |
fox snake = yellow gold colour with black blotches and red/orange head gray ratsnake = black and shiny |
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how many dots does the red belly snake have at the nape of its neck? |
3 |
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how far does the brown snakes black spots run on its body? |
all the way |
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what are key characteristics of viperidae? |
pair of hollow fangs all venemous elliptical pupils |
