I just posted a paper, but I think that this should be more approachable for people here. It shows a rather interesting pattern between Germanic languages (English, German, Icelandic, Gothic...) and most other Indo-European languages, caused by a sound change. A few examples using Latin vs. English:

• pēs (foot) vs. foot
• trēs (three) vs. three
• canis (dog) vs. hound; see German "Hund" dog for reference
• decem (ten) vs. ten
• gelū (ice) vs. cold
• frāter (brother) vs. brother

Note how the consonants look like they went a "merry-go-round" from one language to another:

• Latin fricative vs. English voiced stop
• Latin voiced stop vs. English voiceless stop
• Latin voiceless stop vs. English fricative

That's all caused by the regular sound changes explained in the Wiki link.