Chris Mattison / Giant pill millipede (Arthrosphaera cf branti), captive, occurs Tanzania.

Tim Laman / Close up of young boy aged 9 (model released) watching a Giant Pill millipede (Sphaerotherium) Borneo, July 2007

Pete Oxford / Giant millipede {Sphaerotherium sp} Madagascar

Nick Upton / Overview of Three Cliffs Bay at dusk with Pennard Pill stream meandering across the beach to reach the sea at low tide, Penmaen, The Gower peninsula, Wales, UK, October 2018.

Nick Upton / Southern pill woodlouse (Armadillidium depressum) on an old garden wall at night, Wiltshire, UK, September.

Nick Upton / Two Southern pill woodlice (Armadillidium depressum) on an old garden wall at night, Wiltshire, UK, September.

Nick Upton / Southern pill woodlouse (Armadillidium depressum) on an old garden wall at night, Wiltshire, UK, September.

Guy Edwardes / Three Cliffs Bay, Gower Peninsula, Wales, UK, March 2008.

Ashley Cooper / Second World War pill box on the beach, this was originally on the cliffs above but fell due to coastline erosion. Aldbrough, Yorkshire, England, UK. August 2013.

MYN / Lily Kumpe / Pill millipede (Cynotelopus notabilis) Western Australia. Meetyourneighbours.net project.

MYN / Lily Kumpe / Pill millipede (Cynotelopus notabilis) William Bay National Park, Western Australia. Meetyourneighbours.net project.

MYN / Lily Kumpe / Pill millipede (Cynotelopus notabilis) curled up, William Bay National Park, Western Australia. Meetyourneighbours.net project.

MYN / Lily Kumpe / Pill millipede (Cynotelopus notabilis) curled up, William Bay National Park, Western Australia. Meetyourneighbours.net project.

Alex Hyde / Sequence of Pill millipede (Glomeridae) unrolling from a defensive position, Danum Valley, Sabah, Borneo. Digital composite.

Alex Hyde / Pill millipede (Glomeridae) Danum Valley, Sabah, Borneo.

Alex Hyde / Pill millipede (Glomeridae) rolled into a defensive ball. Danum Valley, Sabah, Borneo.

Alex Hyde / Pill millipedes (Glomeridae) rolled up in defensive position, Danum Valley, Sabah, Borneo.

MYN / Dirk Funhoff / Woodlouse (Armadillidium vulgare) upside down, Staudernheim, Germany. Meetyourneighbours.net project.

MYN / Dirk Funhoff / Woodlouse (Armadillidium vulgare) shpwing underside, Staudernheim, Germany. Meetyourneighbours.net project.

MYN / Dirk Funhoff / Woodlouse (Armadillidium vulgare), Staudernheim, Pfalz, Germany. September. Meetyourneighbours.net project

Solvin Zankl / Woodlouse (Armadillidium pulchellum) Niedersechsische Elbtalaue Biosphere Reserve, Elbe Valley, Lower Saxony, Germany, December.

Adrian Davies / Pill millipede (Glomeridae), rolled into defensive ball. Danum Valley, Sabah, Borneo

Cyril Ruoso / Pill millipede (Glomeris sp) Gunung Leuser NP, Sumatra, Indonesia.

Pascal Pittorino / Woodlouse (Armadillium vulgare) on wood, Var, Provence, France, July.

MYN / Eduardo Blanco / Woodlouse (Armadillidium sp), Corella, Navarra, Spain, April. meetyourneighbours.net project

Stephen Dalton / Close up of a pill woodlouse (Armadillidium vulgare) curled up, UK.

Enrique Lopez-Tapia / Madagascar green-emerald giant pill millipedes (Zoosphaerium neptunus) Andasibe-Mantadia National Park. Madagascar.

MYN / Marc Pihet / Pill woodlouse (Armadillidium vulgare) Maine-et-Loire, France, August, meetyourneighbours.net project

Enrique Lopez-Tapia / Madagascar green-emerald giant pill millipedes (Zoosphaerium neptunus) Andasibe-Mantadia National Park. Madagascar.

Enrique Lopez-Tapia / Madagascar green-emerald giant pill millipede (Zoosphaerium neptunus) Andasibe-Mantadia National Park. Madagascar.

John Abbott / Sphaeriodesmid Pill Millipede (Sphaeriodesmidae) Cayo District, Belize.

John Abbott / Sphaeriodesmid Pill Millipede (Sphaeriodesmidae) in ball, Cayo District, Belize.

MYN / Gil Wizen / Pill millipede (Procyliosoma striolatum) composite image of uncurling sequence, see images 1468356 - 1468359. Fiordland National Park, South Island, New Zealand, February. Composite image. Meetyournei...

MYN / Gil Wizen / Pill millipede (Procyliosoma striolatum) Fiordland National Park, South Island, New Zealand, February. Sequence 4 of 4. Meetyourneighbours.net project.

MYN / Gil Wizen / Pill millipede (Procyliosoma striolatum) uncurling, Fiordland National Park, South Island, New Zealand, February. Sequence 3 of 4. Meetyourneighbours.net project.

MYN / Gil Wizen / Pill millipede (Procyliosoma striolatum) curled up. Fiordland National Park, South Island, New Zealand, February. Sequence 1 of 4. Meetyourneighbours.net project.

Kristel Richard / Two traditionally dressed gentlemen driving a Welsh Cob, harnessed to a pill box, in the Cour D'Honneur of the Haras Du Pin, France's oldest national stud, at Le Pin-au-Haras, Orne, Lower Normandy, Fr...

MYN / Dimitris Poursanidis / Woodlouse (Armadillidium granulatum) Heraklion, Crete, Greece meetyourneighbours.net project

MYN / Joris van Alphen / Pill millipede (Glomeris connexa) curled into defensive ball, Crocker Range, Borneo, Malaysia. Meetyourneighbours.net project

MYN / Matt Cole / Pill woodlouse (Armadillidium vulgare), Leicestershire, England, UK, March. meetyourneighbours.net project

Cyril Ruoso / Pill Millipede (Glomeris sp) rolled up in defensive position, Gunung Leuser National Park, Sumatra, Indonesia

Cyril Ruoso / Pill Millipede (Glomeris sp) rolled into a protective ball, Kalimantan, Indonesia

Juergen Freund / Pill bug (Armadillidium sp) curled into a ball, Tanjung Puting National Park, Borneo, Central Kalimantan, Indonesia

Juergen Freund / Pill bug (Armadillidium sp) on forest floor, Tanjung Puting National Park, Borneo, Central Kalimantan, Indonesia

Juergen Freund / Pill bug (Armadillidium sp) on forest floor, Tanjung Puting National Park, Borneo, Central Kalimantan, Indonesia

Juergen Freund / Pill bug (Armadillidium sp) rolled into ball, on forest floor, Tanjung Puting National Park, Borneo, Central Kalimantan, Indonesia

Mark Taylor / Black-and-white tuxedo kitten being given pill by Vet, Miriam, with a pill-giver. Model released

Ernie Janes / Groynes and a pill box on beach. Happisburgh, Norfolk, UK, September 2012.

Chris Mattison / Giant pill millipede (Arthrosphaera cf branti), captive, occurs Tanzania.

Chris Mattison / Giant pill millipede (Arthrosphaera cf branti), captive, occurs Tanzania.

MYN / Denis Palanque / Pill millipede (Glomeris marginata) woodland, Savoie, France, June. meetyourneighbours.net project

MYN / Denis Palanque / Pill millipede (Glomeris marginata) rolled up for defence, woodland, Savoie, France, June. meetyourneighbours.net project

Niall Benvie / Composite of insects, arachnids and plants found on the Arnos Vale BioBlitz, Bristol, UK, June 2012 meetyourneighbours.net project. Orange ladybird (Halyzia sedecimguttata), Ivy (Hedera helix), Green...

Rob Cousins / Pill harbour on the River Avon, near Bristol. March 21st 2009.

MYN / Jerry Monkman / Pill bug / Pill woodlouse (Armadillidium vulgare) Rye, New Hampshire, USA, September. meetyourneighbours.net project

Christian Ziegler / Pill Bug (Armadillidiidae) rolled up into defensive posture, Lambir Hills National Park, Sarawak, Malaysia

Nature Production / Common pill bug / woodlouse (Armadillidium vulgare) rolled up in ball, on white background, Japan

Nature Production / Common pill bug / woodlouse (Armadillidium vulgare) lying on its back, on white background, Japan

Nature Production / Common pill bug / woodlouse (Armadillidium vulgare) on white background, Japan

Nature Production / Common pill bug / woodlouse (Armadillidium vulgare) on white background, Japan

Nature Production / Common pill bug / woodlouse (Armadillidium vulgare) on white background, Japan

Simon Colmer / Pill woodlouse (Armadillidium vulgare) uncurling sequence on white background Sussex, UK. Digital composite

Simon Colmer / Pill woodlouse (Armadillidium vulgare) curled in ball, Sussex, UK, March

Simon Colmer / Pill woodlouse (Armadillidium vulgare) portrait, Sussex, UK, March

Simon Colmer / Pill Millipede (Glomeris marginata) walking, Sussex, UK, June

Simon Colmer / Pill Millipede (Glomeris marginata) uncurling, Sussex, UK, June

Simon Colmer / Pill Millipede (Glomeris marginata) uncurling, Sussex, UK, June

Simon Colmer / Pill Millipede (Glomeris marginata) curled up for protection, Sussex, UK, June

Mark Taylor / Using a pill-giver to adminster pill to a ginger kitten.

Alex Hyde / Giant pill millipede {Sphaerotherium sp}, close-up of head. Tropical rainforest, Andasibe-Mantadia National Park, Madagascar.

Nick Upton / Pennard Pill stream meandering towards the sea, with cattle grazing the coastal marshes, Three Cliffs Bay, The Gower peninsula, Wales, August 2009

Nick Upton / Pennard Pill stream meandering towards the sea, with cattle grazing the coastal marshes, Three Cliffs Bay, The Gower peninsula, Wales, August 2009

Nick Upton / Meandering Pennard Pill stream and cattle overlooked by Pennard castle ruins, Three Cliffs Bay, The Gower peninsula, Wales, August 2009

Piotr Naskrecki / Pillbug (Armadillidium sp), Woburn, Massachusetts

Piotr Naskrecki / Pillbug (Armadillidium sp) on its back, Woburn, Massachusetts

Rob Cousins / Sculling across the harbour in rowing boat at the Bristol Harbour Festival, August 2008

Thomas Marent / Pill Millipede (Glomeridae), Danum Valley Conservation Area, Borneo, Malaysia

Nick Garbutt / Giant Pill Millipede (Sphaerotherium sp) rolled into defensive posture on forest floor. Mantadia National Park, Eastern Madagascar.

Gary K. Smith / Naturalised Red valerian {Centranthus ruber} growing on Porlock beach, with WW2 pill box in background, Somerset, UK, May

Pete Oxford / Giant pill millipede {Sphaerotherium genus} rolled up into defensive ball, La Madraka, Madagascar

Pete Oxford / Giant pill millipedes {Sphaerotherium} rolled up on hand, Madagascar

PREMAPHOTOS / Giant pill millipede {Sphaerotherium sp} feeding on rotten wood, Madagascar

PREMAPHOTOS / Giant pill millipede {Sphaerotherium sp} feedng on rotten wood, Madagascar

PREMAPHOTOS / Pill millipede {Glomeris marginata} rolled up defensively, UK

PREMAPHOTOS / Pill millipede {Glomeris marginata} rolled up defensively, UK

Pete Oxford / Giant pill millipede {Sphaerotherium sp} Mantady, Madagascar

PREMAPHOTOS / Giant pill millipede (Sphaerotherium sp) feeding on rotten wood on the floor of tropical dry forest, Madagascar

PREMAPHOTOS / Warningly coloured pill millipede (Glomeris connexa) France

Nature Production / Pillbug / Pill Woodlouse {Armadillidium vulgare} shedding skin, sequence 3/3, Tokyo, Japan

Nature Production / Pillbug / Pill Woodlouse {Armadillidium vulgare} first moult after hatching, Tokyo, Japan

Nature Production / Pillbug / Pill Woodlouse {Armadillidium vulgare} shedding skin, sequence 2/3, Tokyo, Japan

Nature Production / Pillbug / Pill Woodlouse {Armadillidium vulgare} shedding skin, sequence 1/3, Tokyo, Japan

Ingo Arndt / Common Pillbug (Armadillidium vulgare) pair rolled into defensive balls, Europe

Piotr Naskrecki / Pill Millipede curled up in defensive posture, Madagascar

Piotr Naskrecki / Pill Millipede curled up in defensive posture, Madagascar

Pete Oxford / Common Pillbug (Armadillidium vulgare) group dried for sale in traditional medicine market, Yunnan, China