1. Department of Small Animal Clinics, Center of Rural Science, Federal University of Santa Maria, Roraima Av., 1000, 97105-900, Camobi, Rio Grande do Sul State, Brazil
2. Veterinery Hospital of Passo Fundo, University of Passo Fundo (UPF), BR 285, 99052-630, São José, Rio Grande do Sul State, Brazil
3. Gramado Zoo, RS 115, 95670-000, Várzea Grande, Rio Grande do Sul State, Brazil
4. Department of Veterinary Medicine, Federal University of Goiás, Goiânia, Goiás State, Brazil