Which mammals have the best sense of smell?

dogs
cats
bears
rats
The area of nasal mucous membrane in a bear's head is 7 times greater than a bloodhound's (and one hundred times larger than in a human's). Polar bears have been seen to march up to 40 miles in a straight line to reach a prey animal they have detected.
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reach: rather globalanimal recordsanimalscarnivoresdogsmammalsnaturenosepetssensessmell
dogs
cats
bears
rats
answers
flagAustria
19%
4%
66%
9%
21
flagGreece
6%
0%
66%
26%
15
flagSwitzerland
6%
9%
64%
19%
31
flagGermany
23%
5%
57%
13%
186
flagNorway
25%
3%
57%
14%
28
flagthe Netherlands
38%
0%
55%
6%
47
flagCzech Republic
15%
0%
52%
31%
19
flagthe United Kingdom
26%
3%
50%
18%
287
flagSweden
25%
25%
50%
0%
20
flagIndia
46%
6%
44%
3%
65
flagPoland
38%
3%
42%
15%
14716
flagItaly
26%
15%
42%
15%
19
flagRepublic of Ireland
25%
7%
41%
25%
39
flagthe United States
44%
2%
40%
12%
211
flagRussia
34%
5%
39%
21%
38
flagUkraine
36%
4%
36%
19%
46
flagCanada
38%
3%
34%
23%
26
flagFrance
40%
5%
30%
25%
20
flagUnknown
50%
2%
27%
19%
943
flagBelgium
35%
7%
21%
35%
14