Otodectes cynotis (ear mite) is a psoroptid mite that accounts for 50-80% of otitis externa cases in cats. A 9 year old female cat was presented with history of intense aural irritation, scratching at the ears and presence of brown waxy exudates from the external ear canal. Diagnosis is made with microscopic examination of ear wax, revealing the presence of the Otodectes cynotis. The cat was treated with selamectin spot-on preparation at 6mg/kg body weight, as single dose applied topically in a single spot at the base of the neck region infront of the scapulae. A single administration of a spot-on formulation of selamectin at the minimum dose was found to be efficient in the treatment of ear mite infestations in the present case.

Demodex spp is the most common ectoparasite recognized in golden hamsters (Mesocricetus auratus). Demodex criceti and Demodex aurati are the two distinct species causing demodicosis in hamsters. Five Golden hamsters belongs to different age groups were presented to Teaching Veterinary Clinical Complex, Mannuthy with alopecia and erythema on the dorsal aspect of the body. Physical conditions of animals were slightly below normal. Examination of deep skin scrapings revealed mites identified as Demodex spp. All the five hamsters were treated with subcutaneous administration of ivermectin @ 0.3mg/kg body weight. Topically amitraz dips were recommended at weekly intervals. Oral multivitamin supplements were also given as supportive therapy. The average time period for complete recovery was found to be five consecutive treatments at 2 weeks interval in all the cases. All the animals made an uneventful recovery by 10 weeks period.