Binocular rivalry in animals? Are there any experiments on binocular rivalry in animals? (In humans, brain responses to Rubin's vase are for example well studied.)
Yes! Binocular rivalry has been studied in monkeys (Logothetis &amp; Schall, 1990; Lehky &amp; Maunsell, 1996)
and extensively in cats (Fries, Roelfsema, Engel, König, &amp; Singer, 1997; Sengpiel, Blakemore, &amp; Harrad, 1995; Sengpiel, Blakemore, Kind, &amp; Harrad, 1994; Sengpiel, Bonhoeffer, Freeman, &amp; Blakemore, 2001; Varela &amp; Singer, 1987; Moore, Spear, Kim, &amp; Xue, 1992; Tong, Guido, Tumosa, Spear, &amp; Heidenreich, 1992),  to say the least. This is all the further I got into a literature search today, but I'm sure there's much more out there.



References
- Fries, P., Roelfsema, P. R., Engel, A. K., König, P., &amp; Singer, W. (1997). Synchronization of oscillatory responses in visual cortex correlates with perception in interocular rivalry. Proceedings of the National Academy of Sciences, 94(23), 12699–12704. Retrieved from http://www.pnas.org/content/94/23/12699.full.
- Lehky, S. R., &amp; Maunsell, J. H. (1996). No binocular rivalry in the LGN of alert macaque monkeys. Vision Research, 36(9), 1225–1234. Retrieved from ScienceDirect.
- Logothetis, N. K., &amp; Schall, J. D. (1990). Binocular motion rivalry in macaque monkeys: Eye dominance and tracking eye movements. Vision Research, 30(10), 1409–1419. Retrieved from http://www.psy.vanderbilt.edu/faculty/schall/pdfs/binmoriv.pdf.
- Moore, R. J., Spear, P. D., Kim, C. B., &amp; Xue, J. T. (1992). Binocular processing in the cat's dorsal lateral geniculate nucleus III. Spatial frequency, orientation, and direction sensitivity of nondominant-eye influences. Experimental Brain Research, 89(3), 588–598.
- Sengpiel, F., Blakemore, C., &amp; Harrad, R. (1995). Interocular suppression in the primary visual cortex: A possible neural basis of binocular rivalry. Vision Research, 35(2), 179–195. Retrieved from ScienceDirect.
- Sengpiel, F., Blakemore, C., Kind, P. C., &amp; Harrad, R. (1994). Interocular suppression in the visual cortex of strabismic cats. The Journal of Neuroscience, 14(11), 6855–6871. Retrieved from http://www.jneurosci.org/content/14/11/6855.full.pdf.
- Sengpiel, F., Bonhoeffer, T., Freeman, T. C., &amp; Blakemore, C. (2001). On the relationship between interocular suppression in the primary visual cortex and binocular rivalry. Brain and Mind, 2(1), 39–54.
- Tong, L., Guido, W., Tumosa, N., Spear, P. D., &amp; Heidenreich, S. (1992). Binocular interactions in the cat's dorsal lateral geniculate nucleus, II: Effects on dominant-eye spatial-frequency and contrast processing. Visual Neuroscience, 8(06), 557–566.
- Varela, F. J., &amp; Singer, W. (1987). Neuronal dynamics in the visual corticothalamic pathway revealed through binocular rivalry. Experimental Brain Research, 66(1), 10–20.