These are my 2 Roborovskii Dwarf Hamsters, the smallest hamsters in the world! 2 - 3 inches long, the size of your finger! Pip is on the left and Squeak is on the right. I rescued them from our local animal shelter, they were there for 6 months before adopted. Now they live in a luxury home, a 10 gallon glass fish tank and a crittertrail hamster cage with tunnels GALORE! This is my Rat Terrier/Patterdale terrier mix, Luna. She is 4 years old and a complete sweetheart who loves her chickens AND hamsters! My hamsters once got loose, and walked around in the same room as her, and she didn't budge. Another time, I couldn't find my hamster, Squeak, so I asked her where he was. She searched the whole house until she found him under HER dog crate. She went right up to him, sniffed him and then wagged her tail.