They might be controversial to you but I am not aware of any particular controversy in scientific circles.
As usual you seem to be very ignorant about science.
Every scientific paper always mentions the controversy and they avoid the term consciousness but uses the technical term "visual self-recognition".
https://www.ncbi.nlm.nih.gov/pubmed/16432640
" For 30 years Gallup's (Science 167:86-87, 1970) mark test, which consists of confronting a mirror-experienced test animal with its own previously altered mirror image, usually a color mark on forehead, eyebrow or ear, has delivered valuable results about the distribution of visual self-recognition in non-human primates. Chimpanzees, bonobos, orangutans and, less frequently, gorillas can learn to correctly understand the reflection of their body in a mirror. However, the standard version of the mark test is good only for positively proving the existence of self-recognition. Conclusive statements about the lack of self-recognition are more difficult because of the methodological constraints of the test. This situation has led to a persistent controversy about the power of Gallup's original technique. We devised a new variant of the test which permits more unequivocal decisions about both the presence and absence of self-recognition. This new procedure was tested with marmoset monkeys (Callithrix jacchus), following extensive training with mirror-related tasks to facilitate performance in the standard mark test. The results show that a slightly altered mark test with a new marking substance (chocolate cream) can help to reliably discriminate between true negative results, indicating a real lack of ability to recognize oneself in a mirror, from false negative results that are due to methodological particularities of the standard test. Finally, an evolutionary hypothesis is put forward as to why many primates can use a mirror instrumentally - i.e. know how to use it for grasping at hidden objects - while failing in the decisive mark test."
What the guy who invented the test said:
“Self-awareness is defined as the ability to become the object of your own attention, consciousness as being aware of your own existence, and mind as the capacity to be aware of your own mental states… either you are aware of being aware or you are unaware of being aware, and the latter is tantamount to being unconscious.” (Gallup G “Do minds exist in species other than our own?” Neuroscience & Behavioral Reviews 9(1985):631-41).
He clearly made a distinction between self-awareness, consciousness and mind.
Now show me a scientific paper where it's said animals possess consciousness without any shadow of controversy.