What animal has the smallest bones?

It's impossible to say definitively which animal has the *smallest* bones, as there are many tiny creatures with incredibly small skeletal structures.

Here are some contenders for the title:

* Olm (Proteus anguinus): This cave-dwelling salamander is known for its tiny bones, especially in its skull.

* Fairyfly (Mymaridae): These tiny parasitic wasps are some of the smallest insects on Earth, measuring less than 1 mm. Their skeletons are correspondingly small.

* Water bear (Tardigrade): These microscopic animals are known for their resilience, but their skeletons are also incredibly small.

* Mites: Many species of mites are incredibly small, and their skeletons are correspondingly diminutive.

* Springtails (Collembola): These tiny, wingless insects are often found in soil and leaf litter. They have small skeletons, and some species can be less than 1 mm long.

Ultimately, pinpointing the animal with the absolute smallest bones depends on how we define "smallest" and how we measure bone size. It's a complex question with no easy answer!