Mounting evidence that having animals early in life improves immune system

Evidence suggests that exposure to certain animals early in life (even before birth) decreases allergies later in life. Other animals seem to make allergies worse.

Sorry, couldn't find a non-paywall link. Browse to the archive.org link, then stop loading once you can see the text and the pay wall should never come up.

I suspect this is the referenced study for evidence: https://pubmed.ncbi.nlm.nih.gov/36989214/