1. American Pet Products Manufacturers Association, 2008. USA. Available at: www.americanpetproducts.org/.
2. Association of Pet Behaviour Counsellors, 2005. Annual review of cases 2005. UK. Available at: www.apbc.org.uk/.
3. Dog and cat bites;August;J. Am. Vet. Med. Assoc.,1995
4. Signalment factors, comorbidity, and trends in behaviour diagnoses in cats: 736 cases (1991–2001);Bamberger;J. Am. Vet. Med. Assoc.,2006
5. Feline behavioral problems other than housesoiling;Beaver;J. Am. Anim. Hosp. Assoc.,1989