The coral snake as well as a number of other elapids, such as the mamba, have an oval-shaped head and round pupils.
As a general rule of thumb, non-poisionous snakes usually have oval shaped heads and round eyes. Venomous snakes tend to have more angular heads and eyes.Nearly impossible to answer here, many snakes have "oval" shaped heads and most of the harmless snakes have round pupils. One venomous snake that would fit this category is the Coral snake.
Nonpoisonous, THIS ANSWER IS NOT TRUE, THE CORAL SNAKE HAS WHAT COULD BE CALLLED AND OVAL SHAPED HEAD AND HAS ROUND PUPILS.
There are both venomous and nonvenomous snakes that meet that description. The image above has round pupils and an oval head. It is the deadly mamba from Africa.
There are species of both venomous and nonvenomous snakes with oval eyes. The snake pictured above is a mamba - a deadly species.
Non poisnous snakes
There are no poisonous snakes but there are venomous snakes. One needs to be familiar with the species of each area as there are no general rules concerning shapes of the head or eyes. Vipers usually have a triangular shaped head. However, in many areas of the world there are species of snakes without a triangular head that are highly venomous. When planning a trip into unfamiliar countries it is best to purchase a guide book to the local species.
sure if you have fetish with em.
Round
nonpoisonous
nonpoisonous
you have to check its eyes. All venomous snakes have cat eyes. sort of oval in the center and greenish-yellowish in the outside. Depends. A rattlesnake's eye, for example has a vertical pupil while a cobra has a round pupil. They have adapted different eyes for different purposes (i.e. crepuscular, nocturnal, diurnal, etc.).
As far as I am aware, there is no such thing as a poisonous snake. Many snakes, however, are venomous. (If you bite the snake and you die, it's poisonous. If the snake bites you and you die, it's venomous.) In North America, if it's not a rattler, copperhead, cottonmouth, or coral snake, it's not venomous. The first three are pit-vipers and easy to recognize. They have a triangular head, and pits between their eyes and nostrils. The coral snake is a bit tricky since it looks almost identical to the scarlet king snake. As a general rule, if the snake is red, yellow, and black, give it lots of room. If you are not sure whether a snake is venomous or not, leave it alone. All snakes, including venomous ones, are edible.