Karine Aigner / Graduate student and biological technician Emily Gati of the University of Florida, holding a trap containing an invasive Argentine black and white tegu (Salvator merianae). The tegu is an adult male...

Karine Aigner / Graduate student and biological technician Emily Gati of the University of Florida, preparing to release a juvenile Argentine black and white tegu (Salvator merianae) from a trap. Florida, USA. Tegus...

Nick Upton / Emily Howard-Williams with Labrador Tui, who has been trained to sniff out feeding stations visited by Harvest mice (Micromys minutus), Moulton College, Northampton, UK, June. Model released.

Nick Upton / Emily Howard-Williams checking that the automatic Radio Frequency Identification (RFID) monitor built into a Harvest mouse feeding station reads a microchip inserted into it and relays the information...

Nick Upton / Emily Howard-Williams placing a grain feeding station equipped with an automatic Radio Frequency Identification (RFID) monitor to survey Harvest mice (Micromys minutus) in field enclosure after releas...

Nick Upton / Emily Howard-Williams placing a grain feeding station equipped with an automatic Radio Frequency Identification (RFID) monitor to survey Harvest mice (Micromys minutus) in a field enclosure after rele...

Nick Upton / Emily Howard-Williams with Labrador Tui, who has been trained to sniff out feeding stations visited by Harvest mice (Micromys minutus), Moulton, Northampton, UK, June. Model released.

Nick Upton / Emily Howard-Williams with Labrador Tui, sitting down by a grain feeding bottle collected from a field site where Harvest mice (Micromys minutus) have been released, to indicate that this bottle has b...

Nick Upton / Emily Howard-Williams rewarding Labrador Tui by offering a Kong to play with for correctly indicating that a grain feeding bottle had been visited by Harvest mice (Micromys minutus), a technique that...

Nick Upton / Emily Howard-Williams with Labrador Tui, sniffing grain feeding bottles collected from a field site where Harvest mice (Micromys minutus) have been released, to identify which ones have been visited,...

Nick Upton / Emily Howard-Williams releasing a Harvest mouse (Micromys minutus) in a field enclosure to study dispersal and monitoring techniques, Moulton, Northampton, UK, June. Model released.

Nick Upton / Emily Howard-Williams releasing a Harvest mouse (Micromys minutus) in a field enclosure to study dispersal and monitoring techniques, Moulton, Northampton, UK, June. Model released.