Grass snake or adder?

[Glasstine]

The cat brought it in!

Makes me glad I live in Ireland . Lovely cat.

Blimey, I think I'd collapse on the spot!

What a gorgeous cat. Looks like an adder to me, we see quite a few where we live.

Hissing Sid!!!!

Grass snake. As others have said those are the underbelly markings.

Brave cat though! When I've seen cats meet snakes they've literally done the cartoon straight up in the air, turn, and whooooosh!

Definitely a grass snake, as others said the picture is confusing because it’s showing the underside mostly. We get a lot here as we’ve got a huge compost pile in a bit of woodland at the end of the garden. I made the same mistake once when trying to identify the first one I discovered (really didn’t want it to be an adder as we had dogs). The poor thing must have panicked because it regurgitated a half digested frog. I felt so guilty but it recovered and slithered off again. Phew.

Oh yes, so it is a grass snake. Phew.

This was a barred grass snake that drowned in our pond. It's markings look similar and it was surprisingly large,

I thought they could swim?

Not when you've eaten a fish that's made you wider than the net over the pond.

I think we need a trigger warning on this!

A trigger warning for what?

The thread title makes it crystal clear that it's about snakes

Anyway OP I'm also saying grass snake, adders are nowhere near that big! And I thought our cat was impressive when he caught a stoat

at trigger warning, FFS.

Too many pictures eek!