Retrospective and Prospective Investigations about “Quatrefoil” Erythrocytes in Canine Blood Smears

Table 1

Sex, age, and breed of dogs included in the initial survey (2,016 dogs—139 dogs with qRBCs = 6.89%) 3,958 CBCs were investigated and 154 CBCs showed qRBCs (3.89%).

	No. of dogs	% Dogs
Sex
Males	73	52.5
Females	66	47.5
Chi squared	𝑃>0.05
Age
Puppies (0–12 m)	22	15.8
Adults (13 m–6 y)	39	28.0
Elderly (>7 y)	78	56.2
Chi squared	𝑃<0.0001
Breed
Mixed	40	28.8
Labrador	18	12.9
German Shepherd	11	7.9
Golden Retriever	8	5.8
Poodle	5	3.6
Rottweiler	5	3.6
Setter	5	3.6
Boxer	4	2.9
Other breed	43	30.9
Fisher exact test	𝑃>0.05

m: month; y: year.