"Come on, come on, smaller toys up front!"
Slinky Dog, setting up the staff meeting

Troikas are a set of five plastic mute egg-shaped toys in the style of a Matryoshka doll with a picture of five animals: dog (largest), cat (second largest), duck (medium), fish (second smallest) and ladybug (smallest). Troikas are based on Little Tikes' Nested Farm Animals.

Toy Story

The Troikas were one of the toys first seen when Slinky was gathering everyone together for a staff meeting. When Sid's voice was heard, the Troikas were so frightened they promptly hid inside each other.

Toy Story 2

They were also seen in Toy Story 2 when Buster comes into Andy's room and knocks them over. Buzz later says their names during an emergency roll call. They are last seen listening to Wheezy singing "You've Got a Friend in Me".

Toy Story 3

None of the five Troikas appear in Toy Story 3. They were probably sold at a yard sale, thrown away, donated or handed down to Molly between Toy Story 2 and Toy Story 3. It is also a possibility that Andy put them in the attic.