The Iveagh Grounds support a range of urban wildlife. Plant species such as Alexanders (Smyrnium olusatrum), herb-Robert (Geranium robertianum), and hedge mustard (Sisymbrium officinale) provide important food sources for invertebrates.

Pollinators and insects include buff-tailed bumblebee (Bombus terrestris), small tortoiseshell butterfly (Aglais urticae), and common blue damselfly (Enallagma cyathigerum), reflecting good habitat connectivity.

Bird species recorded include mistle thrush (Turdus viscivorus), barn swallow (Hirundo rustica), and herring gull (Larus argentatus), with the nearby canal corridor supporting species such as great cormorant (Phalacrocorax carbo).