Soviet Space Dogs
en.wikipedia.org
en.wikipedia.org
There's also an excellent comic about Laika: https://www.amazon.com/Laika-Nick-Abadzis/dp/1596431016
The MJT is a bizarre place but 100% worth visiting.
"All the Universe is full of the life of perfect creatures"
http://fuel-design.com/publishing/soviet-space-dogs/
Highly recommended, though also as others have pointed out quite sad.
Amazing museum by the way, housed in the base of a sculpture of a soaring rocket!
Just last week, I was looking for Belka and Strelka t-shirts.
I have a dog named Laika.
Wow, 2 plus 2 really did equal 5 for Soviet apparatchiks!