This study aimed to assess the effect of environmental enrichment on the behavior and productive performance of castrated piglets, both males and females, from 21 to 35 days of age. For this, 45 animals were randomly distributed in three treatments (control, environmental enrichment with pet bottle, and suspended rope), five replicates, and three animals per experimental unit. The experiment lasted 14 days, with 30 minutes of daily observation, and the observations were performed by the focal animal and behavior relative sampling. The data were recorded about the interactions with the objects, stereotypes, social and agonistic interactions, and animal activities. The productive performance was assessed by weighing three animals of the experimental unit, and their feed at the beginning and at the end of the experiment. We evaluated the daily weight gain, daily feed intake, and feed conversion. A descriptive analysis of the behavioral data was performed. The

The giant anteater (Myrmecophaga tridactyla) is a vulnerable specie from Central and South America and is considered extinct in Belize, Guatemala, El Salvador, and Uruguay. Therefore, studies describing the reproductive characteristics of this species are pivotal for its conservation. Thus, this study aimed to provide a morphological description of their female reproductive tissues. We collected tissue samples from six female giant anteaters, and performed gross, morphological, and histochemical analyses. Five adult and one young subjects were enrolled in the study. In the ovary, classifications were made according to the follicle and oocyte sizes: primordial, primary, secondary, early antral, or antral. Typical follicles with a single oocyte surrounded by a simple or stratified layer of cubic epithelium, atretic follicles, corpora lutea, corpora albicans, and ovarian cysts were also observed. No ovarian lesions were observed. By contrast, endometritis, metritis, mucometra, and endometrial cysts were identified in the uterus. Uterine alterations in these subjects were frequent and could affect reproduction.