Most tests of "working memory" in non-human animals are actually tests of simple short-term memory, i.e., they assess none of the processing aspects of working memory that actually distinguish it from short-term memory. Here are references to two papers where we specifically separated processing aspects of working memory from short-term memory in tests of mice:
Kolata, S., Light, K., Hale, G., & Matzel, L.D. (2007). Selective Attention is the Primary Determinant of the Relationship of Working Memory to General Cognitive Ability in Outbred Mice. Learning and Memory, 14, 22-28.
Kolata, S., Light, K., Townsend, D., Hale, G., Grossman, H., & Matzel, L.D. (2006). Variations in working memory capacity predict individual differences in general learning abilities among genetically diverse mice. Neurobiology of Learning and Memory, 84, 242-246.
This is a short review which covers some relevant issues:
Matzel, L.D., & Kolata, S. (2010). Controlled Attention, Working Memory, and Animal Intelligence. Neuroscience and Biobehavioral Reviews, 34, 23-30.
I also want an answer for the same question. Currently, I only know morris water maze method to test the working memory. Anyone know if there is any other options? thanks
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