Red Squirrel (Sciurus vulgaris), Blarney Castle, County Cork, Ireland

European Souslik (Spermophylus citellus) head peering out of burrow amongst vegetation, Bulgaria

European Souslik (Spermophylus citellus) sat on haunches looking inquisitive, Bulgaria

European Souslik (Spermophylus citellus) close-up of head, Bulgaria

European Souslik (Spermophylus citellus) peering out from burrow, Bulgaria

European Souslik (Spermophylus citellus) peering out from entrance to burrow, Bulgaria

European Souslik (Spermophylus citellus) mouth open, looking alert, Bulgaria

European ground squirrel (Spermophilus citellus) in a meadow, Lower Austria, Austria, Europe

European ground squirrel (Spermophilus citellus) feeding on poppies, foraging, pair, Kiskunsag National Park, Hungary, Europe

European ground squirrel (Spermophilus citellus) eating wheat ear, foraging, pair, Kiskunsag National Park, Hungary, Europe

European ground squirrel (Spermophilus citellus) juvenile sniffing at a sage flower, Hungary

European ground squirrel (Spermophilus citellus) emerging from its burrow in a field, Neusiedlersee National Park, Austria

European Ground Squirrel (Spermophilus citellus) in a steppe meadow, Romania

European Ground Squirrel (Spermophilus citellus) alert on its hind legs, Romania

European Ground Squirrel (Spermophilus citellus) eating a blade of grass, Romania

European Ground Squirrel (Spermophilus citellus) eating a chafer, Romania