The dogs were subjected to detail clinical examination, followed by assessment of thyroid profile using Lisa Elisa reader and washer. The dogs were also subjected to electrocardiography (BPL cardiart 1068) as per Tilley (1992), radiography (Heliophos- D 500 mA X-ray machine) as per Fagin (1988), and 2-d echocardiography (Ixos Vet, Doppler machine) as per Thomas et al.
(1994).