O objetivo desta dissertação é de apresentar que existe forte relação entre passar no teste de marca e ser capaz de entender representações. Para isso se inicia formando uma base para a discussão da consciência, chegando a conclusão de que a consciência é um problema biológico e como tal deve ser respondido por meio da Biologia. Tendo concluído que a capacidade de se reconhecer (self-recognition) é uma das características da consciência, apresenta-se o teste de marca, faz-se a sua defesa chegando a conclusão de que ele é um teste capaz de apontar se o animal é capaz ou não se de reconhecer por eliminação de qualquer outro tipo de resultado. Por fim, apresenta-se a ligação entre passar no teste de marca e ser capaz de entender representações, colocando a capacidade de se reconhecer como uma prova dessa capacidade / The main goal of this dissertation is to show that exist a strong relationship between have a positive result in the mark test and be capable of understand representations. For it, we began building a base for the discussion of consciousness, concluding that consciousness is a biological issue and for it need to be answered by Biology. We concluded that the capacity of self-recognition is one of features of consciousness and showing that the mark test is capable to show if the animal is or not capable of self-recognition by elimination of any another kind of result. In the end, we show a bond between have a positive result in the mark test and be able to understand representations, putting the capability of self-recognition as a prove of it

O objetivo desta dissertação é de apresentar que existe forte relação entre passar no teste de marca e ser capaz de entender representações. Para isso se inicia formando uma base para a discussão da consciência, chegando a conclusão de que a consciência é um problema biológico e como tal deve ser respondido por meio da Biologia. Tendo concluído que a capacidade de se reconhecer (self-recognition) é uma das características da consciência, apresenta-se o teste de marca, faz-se a sua defesa chegando a conclusão de que ele é um teste capaz de apontar se o animal é capaz ou não se de reconhecer por eliminação de qualquer outro tipo de resultado. Por fim, apresenta-se a ligação entre passar no teste de marca e ser capaz de entender representações, colocando a capacidade de se reconhecer como uma prova dessa capacidade / The main goal of this dissertation is to show that exist a strong relationship between have a positive result in the mark test and be capable of understand representations. For it, we began building a base for the discussion of consciousness, concluding that consciousness is a biological issue and for it need to be answered by Biology. We concluded that the capacity of self-recognition is one of features of consciousness and showing that the mark test is capable to show if the animal is or not capable of self-recognition by elimination of any another kind of result. In the end, we show a bond between have a positive result in the mark test and be able to understand representations, putting the capability of self-recognition as a prove of it

Self-awareness is a complex of abilities where empathy, theory of mind (ToM) and episodic memory are attributed to a higher level. Developed for demonstrating mirror self-recognition (MSR) in chimpanzees, mirror mark test has later been commonly used to demonstrate self-awareness in animals. Self-awareness is vital in issues about animal welfare, therefore examining methods of measurement for self-awareness is relevant for improving our understanding of this welfare. Pigs make suitable candidates by representing a species of great economic importance and because knowledge about how animals experience their life and their welfare has great ethical relevance. Consequently, the aim of this study is to illustrate self-awareness in animals and methods of measurement for this, using pigs as an illustrative example. To accomplish this research was conducted using Web of Science. When mirror mark test was applied on cleaner wrasse it was concluded that it passed the test but its relation to self-awareness and ToM was denied. In Pigs knowledge about the MSR is lacking, however they have showed more complex abilities like episodic-like memory and tactical deception, the latter being related to ToM. Cleaner wrasse here represents a species possessing a morphological disability in the mirror mark test, contributing to interpretation difficulties of its demonstrated behavior. Consequently, using the test as a standardized test for self-awareness is being questioned. A gradual perspective on self-awareness can entail better knowledge about which cognitive abilities are shared among species and possibly contribute to more justifiable assessments concerning the welfare of pigs and other farm animals.

Self-recognition is commonlly taken as a higher ability and it was previously considered to be exclusive to spieces who are cognitively more capable, as humans or apes. However during years other animal species with no expectancy of this ability were tested, such as elephants and cetaceans, and even there the signs of self-recognition were found. The most common test for self-recognition is the mark test. The animal is marked with none-olfactoric and none-tactile mark somewhere on the part of its body which can not be seen without mirror. If the subject recognizes itself in the mirror, it will try to wipe out the mark of its body with help of the mirror image. In our experiment we used great tit (Parus major) as a testing species and three types of mirror tests were carried our. Except the fact that great tits are able to succesfully learn to use the mirror image to search hidden food, we found no evidence of self-recognition in mark test. Therefore we believe that this passerine species is not capable of this type of self-recognition.