Chimpanzees are at ~98%, mice are at about 97% similarity [1]. Where do you draw the line? Genetic similarity is imho a poor measure. The capability of suffering is more difficult to assess, but more useful. I'm reasonably sure that the animals we eat can suffer sufficiently to make the way we raise and kill them problematic.

[1] https://www.newscientist.com/article/dn2352-just-2-5-of-dna-...