Juergen Freund / Paralytic tick (Ixodes holocyclus) with engorged body on human hand, this species affects many species, Spectacled flying fox (Pteropus conspicillatus) among them and infects them with a toxin that ca...

Aflo / Composite image of tick showing how its body expands after feeding

Juergen Freund / Spectacled flying fox (Pteropus conspicillatus) casualty of paralytic tick (Ixodes holocyclus) bite being cared for on site of colony by Jenny Mclean, North Queensland, Australia, November 2012

Doug Gimesy / A tick is removed for analysis from a platypus (Ornithorhynchus anatinus) caught in the field. Dartmouth, Victoria, Australia. May 2018.

Nick Hawkins / A young moose (Alces alces) with a condition known as 'ghost moose' which is caused by heavy tick investations. New Brunswick, Canada. August

Nick Hawkins / A young moose (Alces alces) with a condition known as 'ghost moose' which is caused by heavy tick infestation, New Brunswick, Canada. August

Ann & Steve Toon / Bokmakerie (Telophorus zeylonus) with grub, and tick on throat, Addo national park, Eastern Cape, South Africa, September.

Nick Upton / Man releasing a Hedgehog (Erinaceus europaeus) after removing Hedgehog ticks (Ixodes hexagonus) from it, Chippenham, Wiltshire, UK, August 2017. Property and model released.

Nick Upton / Man inspecting a Hedgehog (Erinaceus europaeus) caught in his garden for Hedgehog ticks (Ixodes hexagonus) Chippenham, Wiltshire, UK, August 2017. Property and model released.

Nick Upton / Man inspecting a Hedgehog (Erinaceus europaeus) caught in his garden for Hedgehog ticks (Ixodes hexagonus) Chippenham, Wiltshire, UK, August 2017. Property and model released.

Nick Upton / Hedgehog tick (Ixodes hexagonus) removed from a Hedgehog (Erinaceus europaeus) with tweezers, Chippenham, Wiltshire, UK, August 2017. Model released.

Nick Upton / Hedgehog tick (Ixodes hexagonus) removal from a Hedgehog (Erinaceus europaeus) with tweezers, Chippenham, Wiltshire, UK, August 2017. Model released.