For reasons that are too lengthy to go into here there really are no snakes in Ireland—anywhere. There are no mosquitoes. Sometimes in the summer there are midges, which, depending on the weather conditions and the time of day (and the individual concerned), will bite, but they do not come inside the house and are easily avoided. There are flies in the summer, but they seem uninterested in food or humans; their focus is on the animals in the pasture. Window screens are virtually unknown in Ireland.
In North Mayo are seagulls, magpies, jackdaws, rooks, and hooded crows in abundance, as well as other intelligent birds. Lobsters and incomparable wild salmon are readily available in season.
And lots of sheep!