Discussing Peter Singer's Take on Animals Tonic Discussions

First off, the subject matter for this one is intense, viewer discretion is advised.
The start of Edmund Howe's article in the Journal of Clinical Ethics says it all. "Peter Singer, a leading philosopher who advocates animals' interests. expressed views on human/animal sex in an on-line book review. He said that while he didn't regard bestiality as "normal or natural," he didn't find it necessarily offensive" to our status and dignity a human being. He said this to highlight what he sees as many humans' hypocrisy regarding the treatment of animals: they are outraged at human/animal sex, when no one, ostensibly, is harmed. Yet these same people may show no concern when thousands of animals suffer needlessly every day." (https://www.journals.uchicago.edu/doi...)
This take starts the conversation which quickly expands into the difference between humans and animals (a difference in degree or in kind?).