Um cão, fêmea, poodle, 8 anos, apresentou queixa principal de lesão ulcerada em plano nasal e epixtase, com evolução de aproximadamente seis meses. O animal foi submetido a anestesia para retirada do nódulo de 0,5 cm de diâmetro. O material foi encaminhado para exame histopatológico de rotina com coloração de Hematoxilina-Eosina (HE) e respectivamente imuno-histoquímica. No exame histopatológico notou-se uma massa nodular, com bordos mal definidos, constituída por células arredondadas de citoplasma escasso e cromatina nuclear condensadas que iam desde a derme profunda e dissecavam parte da epiderme. Essas células apresentavam um padrão de pleomorfismo alto e alta relação núcleo:citoplasma. Entremeando o estroma observou-se grande quantidade de estruturas vasculares que vão desde a superfície basal até a derme superficial. O exame imuno-histoquímico revelou forte marcação para o complexo principal de histocompatibilidade MHCII, que cora fortemente linfócitos e histiócitos, que correspondem a estrutura tumoral e proliferativa das células neoplásicas do tumor. Os tumores histiocíticos, bem como histiocitomas são relativamente comuns em cães jovens e mais raramente os histiocitomas fibrosos malignos são diagnosticados em cães, ocorrendo mais comumente em humanos. Nesse relato são descritas as características patológicas e imuno-histoquímicas que permitiram o diagnóstico, possibilitando a diferenciação entre histiocitomas não fibróticos e outras neoplasias caninas comuns.

Puma yagouaroundi (gato-mourisco) é um felino que apresenta vasta distribuição geográfica no Brasil, podendo ser encontrado em vários biomas. Na literatura observa-se escassez de trabalhos sobre sua anatomia macroscópica. O objetivo do trabalho foi a descrição macroscópica do sistema reprodutor masculino visando a obtenção de informações que possam ser úteis ao manejo reprodutivo da espécie. O estudo foi realizado em um cadáver macho doado ao Laboratório de Anatomia Veterinária pelo Hospital Veterinário da Universidade Federal de Campina Grande. O animal foi fixado em formal a 10 % para posterior dissecação e descrição do sistema reprodutor masculino. Foram identificadas as seguintes estruturas funcionais do aparelho genital masculino do gatomourisco: escroto, pênis, testículos, epidídimos, ductos deferentes e as glândulas genitais acessórias, identificando-se apenas a próstata, não possuindo as glândulas bulbouretrais e vesiculares. O escroto com seus constituintes internos situa-se na região subanal. Os testículos apresentaram formato ovóide, posicionado perinealmente, dentro do escroto. O ducto deferente compreende uma estrutura longa, contínua a cauda do epidídimo, desembocando na superfície craniodorsal da próstata. O pênis mostrou-se um órgão curto, achatado látero-lateralmente com presença de espículas e localizado dentro do prepúcio.Palavras Chaves: descrição macroscópica, gato mourisco, sistema reprodutor Gross anatomy of the reproductive organs of male Puma yagouaroundi (Geoffroy, 1803)ABSTRACT: The Puma yagouaroundi (cat-Moorish) is a feline that has wide geographic distribution in Brazil, can be found in various biomes. In the literature there has been few studies on their gross anatomy. The objective was the macroscopic description of the male reproductive system in order to obtain information that might be useful to reproductive management of the species. The study was conducted in a male body donated to Veterinary Anatomy Laboratory at the Veterinary Hospital of the Federal University of Campina Grande. The animal was fixed in 10% formal for further dissection and description of the male reproductive system. the following functional structures of the male genital tract of the cat-Moorish were identified: scrotum, penis, testicles, epididymis, vas deferens and accessory genital glands, identifying only the prostate, not having the bulbourethral and vesicular glands. The scrotum, with its internal components is located in subanal region. The testes showed ovoid shape, positioned perinealmente within the scrotum. The vas deferens comprises a long structure, continuous tail of the epididymis, ending up in Article History:

The skin of donkeys and mules represents a promising source of income; however, cultural, productive, and infectious factors can directly interfere with the quality of the integumentary tissue and well-being of these species. The objective of this study is to present a literature review on equine dermatopathies. This literature review included scientific articles related to equine medicine and breeding according to pre-established search terms and expressions published in recently articles. The evaluation of the clinical and pathological behavior of dermatopathies implies the use of control strategies and the recognition of pathological patterns that may be particular to the species.

A 4-mo-old northern red-shouldered macaw ( Diopsittaca nobilis) was admitted to the veterinary hospital of the Arruda Câmara Zoo, in the State of Paraiba, Brazil, for investigation of an orbital mass. Given rapid progression and lack of response to treatment, the bird was euthanized, and an autopsy was performed. Histologically, the mass consisted of a retrobulbar invasive tumor characterized by tubular and rosette-like structures, with interspersed heteroplastic tissues, such as aggregates of neuroglial cells and islands of hyaline cartilage. The tumor was immunopositive for pancytokeratin, GFAP, NSE, and S100. These findings were compatible with an ocular teratoid medulloepithelioma, a neoplasm best described in humans but also reported rarely in young cockatiels and African Grey parrots.

Goats and sheep have morphological characteristics for adaptation to desert and semiarid regions. The appearance of scrotum division known as scrotum bipartition has already been reported in goats. This anatomy increases the surface of each testicle exposed to environmental temperature, favoring heat dissipation and improving reproductive efficiency. Considering that there are already studies on the goat species demonstrating the presence of this characteristic as an influence on reproductive parameters, the prevalence of scrotum bipartition was estimated in the sheep herds reared in the municipality of Patos, Paraiba backwoods, Brazil. A total of 331 rams were examined from farms in four municipalities in the micro-region of Patos, Paraiba, Brazil, and the same study was also carried out at the municipal slaughterhouse in this city, where 456 animals were examined. According to the analysis, 66.67% of the farms visited presented one or more sheep with scrotum bipartition, with a prevalence of 11.48% on the farms and 14.47% at the slaughterhouse. The degree of bipartition was 9.59 ± 1.035% of the total scrotum length for the animals in the field and 12.89 ± 0.749% for those from the slaughterhouse, characterizing bipartition of less than 50% of the scrotum length. The variables intensive rearing (OR = 16.6) and the Dorper breed (OR = 6.91) were identified as factors associated to the presence of scrotum bipartition. It was concluded that scrotum bipartition is a characteristic present in sheep reared in the municipality of Patos in the semiarid region of Paraiba state, northeastern Brazil, and high prevalence was observed of farms with bipartition sheep, but a low number of animals with scrotum bipartition was identified.