There's burrowing birds.

They spoke of those hours of burrowing.

Those of the genus Tomopterna are burrowing frogs native to Africa and exhibit most of the characteristics common to burrowing frogs around the world.

The only remaining point was what they were burrowing for.

They seemed to me to be rudimental, burrowing men, still standing on their defence, awaiting their transformation.

Then , when they reached their meeting , they forgot their fish , and it took its way into the sea , burrowing .

I've been sitting back there so long in the dark that I feel like a gopher or a burrowing owl or something.

But when they came to the point where the two met , they forgot their fish , which made its way burrowing into the sea .

Although it is still valued for its fur in some regions, its destructive feeding and burrowing behaviors make this invasive species a pest throughout most of its range.

looking at small clusters of the body, these little pieces of tissue that were the trophoblasts coming off of the blastocyst, all of a sudden burrowing itself into the side of the uterus, saying, I'm here to stay.

And as we kept on working on this data, looking at small clusters of the body, these little pieces of tissue that were a trophoblast coming off of a blastocyst, all of a sudden burrowing itself into the side of the uterus, saying, I'm here to stay.