Most critters won't eat daffodils. A person picking a flower with a bit too much enthusiasm?

The hole next to the daffodil and the tulip not touched is a dead give away to chipmunks in your yard.

In 29 years the chipmunks don't bother the tulips but go after the daffodils, have seen it with my own eyes. They go after the bulbs, the leaves, the stems and the flower.

The squirrels will go after any and all bulbs, including daffodils, but that is when they are newly planted bulbs.

Check and see if the hole looks a bit slanted as you look into it. That is the hole of a chipmunk. Hole looks as if it goes straight down when you first look at it, but if you carefully look at the inside of the hole, you will see it's a tunnel with an angle.
Chipmunks tunnel underground all over the place and can be very destructive to you gardens. They will eat the plants, leaves, stems, roots, flowers and do it from above ground or get the roots from underground as they dig their tunnels.

You usually see the holes dug right beside a plant.

Fran

I'll second this. The chipmunks my my garden have sucked up several daffos this summer and left little holes. Can't bring myself to do anything about them other than allow they were probably living here before I was, so I let them be.

The hole does look like you described from a chipmunk.
It is sitting very near to where a chipmunk lives.
We also have Red Squirrels and Gray Squirrels.

I guess I shouldn't be surprised despite what I've read about Daffodils being poisonous.