VN May 2017

Dermatology Quiz I Questions

Dermatology Quiz

Q

? A white budgerigar was presented with crusty outgrowths on the beak (Figure 1) and legs (Figure 2).

Dr Martin Briggs BSc, BVSc, MSc(Med), FRCVS Registered Specialist

in Veterinary Dermatology

Which tests would you perform?

1 2

1

What is the most likely diagnosis?

3

What treatment would you recommend? What advice would you give to the owners regarding their aviary?

4

1

See answers on page 28

probably relies less on colour and more on other visual features such as textural differences to distinguish such objects from their surrounding

actually be more visible to the horse than to the trichromatic human. W hat do horses see ? P art 3 <<< 26

In the sport of horse-trials, where most cross-country fences are often

of a similar colour than

environments. References:

the immediate surroundings, the majority of horses negotiate such obstacles with ease. This indicates that the fences are clearly visible to the horse, suggesting that the horse

1. Murphy J, Hall C, Arkins S. 2009. What horses and humans see: A comparative review. International Journal of Zoology 2. Hall CA, Cassaday HJ, Vincent CJ, Derrington AM. 2006. Cone excitation ratios correlate with color discrimination performance in the horse ( Equus caballus ). Journal of Comparative Psychology , 120 (4), pp. 438– 448. v

Mei/May 2017 27