id	breed	sex	weight_20	weight_21	weight_22
1	Pug	female	7.54	7.27	6.2
2	Labrador	male	23.75	28.88	19.34
4	Saint Bernard	female	NA	57.79	78.4
5	Dalmatian	female	NA	18.89	26.62
7	Bull Terrier	male	NA	28.01	34.15
9	Weimaraner	male	NA	31.86	22.91
10	Chow Chow	male	NA	29.27	25.46
12	Pointer	female	NA	35.86	23.1
13	Greyhound	female	NA	24.47	26.79
14	Finnish Spitz	male	NA	15.55	13.06
18	Alaskan Malamute	male	NA	35.85	47.89
19	Boxer	female	NA	28.57	35.35
21	Yorkshire Terrier	male	NA	NA	3.46
22	Poodle	male	NA	NA	23.27
23	golden retr.	female	NA	-	18.98
27	Schäferhund	female	NA	NA	16.96
29	Chihuahua	male	NA	NA	1.34
30	Beagle	female	NA	NA	8.69
31	Golden Retriever	male	NA	NA	26.9
33	Labradoer	male	NA	NA	24.56
