Related Experiment Video
Updated: May 4, 2026
06:00
Experimental Manipulation of Body Size to Estimate Morphological Scaling Relationships in Drosophila
Published on: October 1, 2011
16.1K
Dog behavior co-varies with height, bodyweight and skull shape
Paul D McGreevy1, Dana Georgevsky1, Johanna Carrasco1
1Faculty of Veterinary Science, University of Sydney, New South Wales, Australia.
Plos One
|December 21, 2013
Summary
Dog breed height and body weight correlate with numerous undesirable behaviors. Skull shape, measured by cephalic index (CI), also influences behaviors like grooming and chasing. These findings link canine physical traits to behavioral patterns.
Area of Science:
- Animal Behavior
- Comparative Anatomy
- Canine Genetics
Background:
- Dog breeds exhibit significant diversity in skull and body shape.
- Previous research suggests links between canine cephalic index (CI) and neural architecture.
- Understanding morphology-behavior correlations can inform animal welfare and breeding practices.
Purpose of the Study:
- To investigate correlations between canine morphology (cephalic index, height, bodyweight) and behavioral traits.
- To identify specific physical attributes associated with various companion dog behaviors.
Main Methods:
- Collected cephalic index (CI) data from show-quality dogs.
- Utilized existing data on breed height, bodyweight, and behavioral traits from the Canine Behavioral Assessment and Research Questionnaire (C-BARQ) involving 8,301 companion dogs across 49 breeds.
- Employed stepwise backward elimination regression analysis to identify significant correlations.
Main Results:
- 33 out of 36 undesirable companion animal behaviors correlated with height, bodyweight, CI, or combinations thereof.
- Breed average height showed strong inverse relationships with numerous fear, anxiety, and aggression-related behaviors.
- Cephalic index (CI) positively correlated with allogrooming and self-grooming, and inversely with chasing behavior.
Conclusions:
- Canine height, bodyweight, and cephalic index (skull shape) are significantly associated with a range of behavioral traits.
- Decreasing height across breeds correlated with more problematic behaviors, excluding trainability.
- Further research is needed to determine the biological basis and significance of these morphology-behavior associations.
More Related Videos
03:35Determining Gender-Based Differences in Retinal and Choroidal Thickness in Underweight Individuals via Swept-Source Optical Coherence Tomography
Published on: December 1, 2023
853
07:26Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology
Published on: August 22, 2022
1.7K
Related Concept Videos
01:08Overview of the Skull
12.2K
The cranium (skull) is the skeletal structure of the head that supports the face and protects the brain. It is subdivided into the facial bones and the brain case, or cranial vault. The facial bones underlie the facial structures, form the nasal cavity, enclose the eyeballs, and support the teeth of the upper and lower jaws.
The cranial vault surrounds and protects the brain and houses the middle and inner ear structures. This cavity is bounded superiorly by the rounded top of the skull, which...
The cranial vault surrounds and protects the brain and houses the middle and inner ear structures. This cavity is bounded superiorly by the rounded top of the skull, which...
12.2K
01:18Polygenic Traits
58.4K
When more than one gene is responsible for a given phenotype, the trait is considered polygenic. Human height is a polygenic trait. Studies have uncovered hundreds of loci that influence height, and there are believed to be many more. Due to the high number of genes involved, as well as environmental and nutritional factors, height varies significantly within a given population. The distribution of height forms a bell-shaped curve, with relatively few individuals in the population at the...
58.4K
01:27Cranial Bones: Lateral View
6.8K
The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...
6.8K
01:10Nature and Nurture
19.4K
Many human characteristics, like height, are shaped by both nature—in other words, by our genes—and by nurture, or our environment. For example, chronic stress during childhood inhibits the production of growth hormones and consequently reduces bone growth and height. Scientists estimate that 70-90% of variation in height is due to genetic differences among individuals, and 10-30% of variation in height is due to differences in the environments that individuals experience,...
19.4K
01:18Classification of Bones
14.3K
The bones of the human skeletal system are of varied shapes, sizes, and functions. They can be classified based on their shape and function into four major classes: long bones, short bones, flat bones, and irregular bones. Some classifications include a fifth type, the sesamoid bones, as a separate class, whereas others categorize them under short bones.
Long and Short Bones
The appendicular skeleton, particularly the upper and lower limbs, is primarily made of long and short bones. The...
Long and Short Bones
The appendicular skeleton, particularly the upper and lower limbs, is primarily made of long and short bones. The...
14.3K
02:32Variation: Normal Distribution, Range, and Standard Deviation
24.7K
In the field of psychology, there are several ways to organize measurements of a trait, feature, or characteristic (i.e., variables). Qualitative data, such as ethnicity, can be tabulated into a frequency count to provide information about the proportion, as well as the variety of groups in a sample or population. On the other hand, researchers can perform a wider set of calculations on quantitative data. The mean, mode, and median, for instance, are central tendency measures to identify a...
24.7K