What logical fallacy fits?

I gave my bunny Incontinence Remedy when he had sand in his bladder. Vet was surprised at how quickly his bladder cleared. I continue to give him this and am adding Urinary Irritation with it to make sure his bladder stays clear.

-- Someone identified as "Marti"on the Pets for Homeopathy web site.

Answer

The statement by "Marti" demonstrates several logical issues, primarily the post hoc ergo propter hoc fallacy. This fallacy occurs when someone assumes that because one event followed another, the first event caused the second. In this case, Marti assumes that the Incontinence Remedy caused the bunny's bladder to clear simply because the improvement happened after administering the remedy.

Additionally, Marti's reasoning might reflect confirmation bias. This bias involves favoring information that confirms one's pre-existing beliefs. Marti may be inclined to believe in the effectiveness of homeopathy and hence attributes the recovery to the remedy without considering other possible explanations, like the natural resolution of the condition or the possibility of coincidental improvement.

Finally, there is a lack of scientific evidence or control in this scenario. Without proper medical diagnosis or controlled conditions, the attribution of the bunny's recovery solely to the remedy lacks rigorous support. This is a form of faulty reasoning due to the absence of comprehensive evaluation of all possible factors involved in the improvement of the bunny’s condition.