Regarding the similarity of genomes, you can download both complete sequences (with less than 0.01% errors) and compare them yourself if you like.
It will unfortunately pass all those those are science denialists by to point out that differences in statistics relating to similarity are these days entirely due to differences in the type of similarity you mean. For example, coding DNA is much more similar than non-coding DNA. Autosomal DNA is much more similar than non-autosomal DNA. Both of these facts are successful predictions of the Theory of Evolution from before when any species had had their genomes sequenced (which only happened in the very late 20th century).
Similarity taking into account duplication mutations is higher than similarity without taking that into account.
The degree of similarity seen is entirely consistent with two lines that diverged about 6 million years ago and experiences the sort of rate of mutation that has been directly measured by sequencing individuals and their progeny in the 21st century.
This sounds like it could be useful, in attempting to preserve endamgered species.