mammals.csv

The data in mammals.csv come from Allison & Cicchetti (1976) and contain data on 62 species of mammals. The attributes include:

• species: Common name of species
• body_weight: Body weight, in kg
• brain_weight: Brain weight, in g
• slow_wave: Average slow wave (non-dreaming) sleep per day, in hours
• paradox: Average paradoxical (dreaming) sleep per day, in hours
• total_sleep: Average sleep per day, in hours
• lifespan: Average lifespan, in years
• gestation: Average gestation period, in days
• predation: Rating of degree to which species are preyed upon, 1 (low)–5 (high)
• exposure: Rating of sleep exposure from 1 (low exposure; e.g., sleep in a burrow or den)–5 (maximally exposed sleep)
• danger: Rating of predatory danger based on predation and exposure scales, 1 (low danger)–5 (high degreee of danger)

Preview

# Import data
mammals = readr::read_csv(file = "https://raw.githubusercontent.com/zief0002/benevolent-anteater/main/data/mammals.csv")

# View data
mammals

# A tibble: 62 × 11
   species       body_weight brain_weight slow_wave paradox total_sleep lifespan
   <chr>               <dbl>        <dbl>     <dbl>   <dbl>       <dbl>    <dbl>
 1 African elep…    6654           5712        NA      NA           3.3     38.6
 2 African gian…       1              6.6       6.3     2           8.3      4.5
 3 Arctic fox          3.38          44.5      NA      NA          12.5     14  
 4 Arctic groun…       0.92           5.7      NA      NA          16.5     NA  
 5 Asian elepha…    2547           4603         2.1     1.8         3.9     69  
 6 Baboon             10.6          180.        9.1     0.7         9.8     27  
 7 Big brown bat       0.023          0.3      15.8     3.9        19.7     19  
 8 Brazilian ta…     160            169         5.2     1           6.2     30.4
 9 Cat                 3.3           25.6      10.9     3.6        14.5     28  
10 Chimpanzee         52.2          440         8.3     1.4         9.7     50  
# ℹ 52 more rows
# ℹ 4 more variables: gestation <dbl>, predation <dbl>, exposure <dbl>,
#   danger <dbl>

References

Allison, T., & Cicchetti, D. V. (1976). Sleep in mammals: Ecological and constitutional correlates. Science, 194(4266), 732–734. doi:10.1126/science.982039